septumn.

Brit.

/ˈsɛptəm/, U.S.

/ˈsɛptəm/

Inflections: Plural septa.

Forms: 1500s– septum, 1600s septin.

Origin: A borrowing from Latin. Etymon: Latin sēptum.

Etymology: < classical Latin sēptum, saeptum enclosed space, fold, paddock, voting enclosure, surrounding wall or fence, barrier, partition, division, use as noun of neuter past participle of sēpīre , saepīre to enclose < sēpēs , saepēs hedge, of uncertain origin. Compare sept n.²

I. Senses relating to parts of animals, plants, and other organisms.

a. Anatomy and Zoology. Originally (more fully septum transversum): the diaphragm, which separates the thorax and abdomen (obsolete). In later use: any of various structures that form a dividing wall or partition between two cavities or areas of tissue in the body of a human or other animal. Frequently with distinguishing Latin or English word. [Compare classical Latin transversum septum transverse septum (Celsus).]

ΘΚΠ

the world > life > biology > physical aspects or shapes > specific areas or structures > [noun] > separation or partition

mediastinum?a1425

mediastine?c1425

septum1543

paries1694

interseptum1753

cameration1863

abstriction1877

abjunction1887

macroseptum1904

1543 B. Traheron Interpr. Straunge Wordes in tr. J. de Vigo Most Excellent Wks. Chirurg. sig. ζζvi.^v/1 And the nether part of thorax is called septum transuersum.

1578 J. Banister Hist. Man iv. f. 54 Where the fleshy part of Septum doth degenerate into a Tendon.

1615 H. Crooke Μικροκοσμογραϕια 147 (caption) The second exhibiteth the Kidney where all the substance or partition which is called Septum renis is sliced away in a compasse, that the second cauity may better appeare.

1726 A. Monro Anat. Humane Bones 86 In some Sculls, besides the large osseus Septum, there are found in each Sinus several bony Pillars.

1783 Philos. Trans. 1782 (Royal Soc.) 72 442 If they be viewed with a deep magnifier, every cone appears divided transversely by two or three internal septa or partitions.

1803 C. Bell Anat. Human Body III. i. i. 15 Those septa, or, as they are called, processes of the dura mater, being extended across from the internal surface of the cranium, support the brain in the sudden motions of the body.

1874 Proc. Royal Soc. 1873–4 22 145 In miliary tuberculosis of man..we see that the first changes take place in the alveoli and interalveolar septa.

1951 G. R. de Beer Vertebr. Zool. (ed. 2) iv. 43 They extend in the septum that divides the myotomes horizontally, and are called ‘dorsal’ ribs.

1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) iii. 276/1 The grooves between segments [of annelid worms] coincide with internal compartments, often separated by transverse sheets of tissue (septa), containing serially repeated nervous, muscle, and excretory systems.

2014 A. Roberts Incredible Unlikeliness of Being 231 As the cloaca on the inside becomes divided by the urorectal septum, the cloacal membrane on the outside also becomes divided in two.

b. spec. More fully nasal septum. The structure that divides the nasal cavity into right and left sides, made of bone and cartilage and lined with mucous membrane. [Compare post-classical Latin septum narium septum of the nostrils (1568 or earlier), and septum nasi septum of the nose (1562 or earlier).]

ΘΚΠ

the world > life > the body > external parts of body > head > face > nose > [noun] > septum

nose gristleOE

crete?1541

nose-bridge1572

bridle1578

septum1615

1615 H. Crooke Μικροκοσμογραϕια xiii. viii. 950 The third bone..is called Septum or the partition, because it distinguisheth the cauity of the nostrilles into two parts.

1781 T. Pennant Hist. Quadrupeds II. 530 The nostrils oval, and divided by a septum.

1832 D. Brewster Lett. Nat. Magic xii. 312 Some of the party experienced sharp pains in the tips of their ears and in the septum of the nose.

1957 Chronicle-Telegram (Elyria, Ohio) 20 Feb. 36/2 Appendicitis was succeeded as a fashionable disease by deviated septa.

2008 Daily Star (Nexis) 14 Apr. 5 Natasha was such a heavy cocaine user the drug had eaten away the septum of her nose.

c. spec. The structure that divides the heart into right and left sides, consisting of strong fibrous tissue and muscle. Also: the section of this separating the heart's lower chambers (more fully ventricular septum, interventricular septum) or upper chambers (more fully atrial septum, auricular septum, interatrial septum). [Compare post-classical Latin septum cordis septum of the heart (1568 or earlier).]

ΚΠ

1615 H. Crooke Μικροκοσμογραϕια vi. xii. 372 (caption) The wall betwixt the ventricles of the heart called Septum.

1662 N. Culpeper & A. Cole tr. T. Bartholin Anatomy ii. vii. 110/2 Gassendus saw Payanus at Ajax shew the Septum of the Heart to have through-fares [L. septum cordis pervium].

1819 A. Rees Cycl. XVII. at Heart The younger the fœtus is, the larger is this opening, so that there seems to be scarcely any auricular septum.

1879 St. George's Hosp. Rep. 9 257 Heart. A small abscess in inter-ventricular septum.

1909 Proc. Royal Soc. B. 81 151 The first ganglion cells that appear in the embryonic heart lie in the atrial septum.

1986 Times-Standard (Eureka, Calif.) 1 Oct. 16/2 A heart attack does not invariably involve the ventricular septum.

2002 Esquire Nov. 24/1 Condition called hypertrophic cardiomyopathy (HCM), in which the heart's septum is dangerously enlarged, blocking the flow of blood and, in many cases, causing death.

d. spec. More fully septum lucidum, septum pellucidum. A structure formed of two thin layers of nerve cells and fibres, located in the midline of the brain between the anterior horns of the lateral ventricles, and forming part of the limbic system. [In septum lucidum < post-classical Latin septum lucidum (1561 or earlier).

In septum pellucidum < post-classical Latin septum pellucidum (1677 or earlier in this sense).]

ΘΚΠ

the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > ventricles > partition between

septum lucidum1698

basin1728

1615 H. Crooke Μικροκοσμογραϕια vii. x. 460 This septum before it be stretched is loose & rugous and doeth not shine.

1698 W. Cowper Anat. Humane Bodies App., 7th Table, fig. 30 That part of the corpus callosum by Vieussens, call'd fornix vera, between which, and the fornix..is plac'd the septum lucidum.

1745 Med. Ess. & Observ. Pract. Physic & Surg. II. 105 The Septum Pellucidum was very distinctly seen.

1824 Anat. Brain 53 It [sc. the fornix] supports in some degree the septum pellucidum.

1942 F. A. Mettler Neuroanatomy iv. 97 Stretched between the copula, rostrum, genu and anterior half of the corpus callosum is a thin, vertically arranged membrane, the translucent septum (s. pellucidum).

2005 Sci. Amer. (U.K. ed.) Oct. 51/1 Stimulation of a limbic region called the septum could trigger euphoria, strong enough in some cases to counteract depression and even physical pain.

a. Biology. A thin structure forming a dividing wall or partition between parts of a plant.Such partitions typically include those separating the parts of a compound ovary or spore, or between cells, as between daughter cells during binary fission, or between adjacent compartments of a fungal hypha.

ΘΚΠ

the world > life > biology > substance > cell > parts of cell > [noun] > wall or membranes

septum1720

cell wall1840

valve1852

periplast1853

stroma1872

ghost1879

endoplasmic reticulum1883

plasma membrane1893

plasmalemma1923

unit membrane1958

purple membrane1968

the world > plants > part of plant > cell or aggregate tissue > [noun] > cell > parts of cell > cell wall and parts

septum1720

pit1839

sieve-plate1875

sieve-pore1875

sieve-tube1875

anticlinal1882

periclinal1882

sieve-vessel1882

pit cavity1884

pit membrane1884

middle lamella1887

torus1887

tonoplast1895

pit canal1911

pit chamber1917

pit aperture1918

pit pair1933

pit field1934

margo1965

sieve-tissue-

1720 P. Blair Bot. Ess. ii. 54 The Placentæ..sometimes..arise from an Axis medius,..fram'd by the Conjunction of the three Septa, which meet in the Center.

1830 J. Lindley Introd. Nat. Syst. Bot. 159 A fruit with the valves alternate with the septa.

1870 J. D. Hooker Student's Flora Brit. Islands 85 Pod 2-valved, turgid or flat with a longitudinal septum.

1941 V. J. Chapman Introd. Study Algae 57 Nuclear division now takes place near this end of the cell and a septum is laid down between the two daughter nuclei.

1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) iv. 360/2 Their reproductive structures (spores and gametangia) are cut off by complete, unperforated septa from the rest of the mycelium.

2005 E. Heuvelink Tomatoes iii. 72 The pericarp wall may also be divided into the outer wall, radial walls (septa), which separate adjacent locules, and the inner wall (columella).

b. Zoology. A thin plate or wall forming part of a shell or exoskeleton and wholly or partly dividing the enclosed space; a partition between adjacent sections of a chambered shell; each of the radiating plates in the cell of a coral.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Anthozoa Actinozoa > member of > septum

septum1786

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > Testacea (shelled molluscs) > shelled mollusc > shell > part of

auricle1665

heel1673

lip1681

mouth1681

whirl1681

rib1711

antihelix1721

canal1734

columella1755

vesture1755

body whirl1776

fent1776

pillar1776

pillar-lip1776

septum1786

aperture1794

body whorl1807

costa1812

seam1816

spine1822

umbo1822

varix1822

peristome1828

summit1828

nucleus1833

concameration1835

lunula1835

nympha1836

nymph1839

lunule1842

peritreme1848

body chamber1851

axis1866

umbone1867

liration1904

1786 Philos. Trans. (Royal Soc.) 76 164 Horizontal sections of the shell, in order to show the internal structure, or the appearance of the septa.

1815 S. Brookes Introd. Conchol. 94 The septa transverse and perforated by a tube.

1846 J. D. Dana U.S. Exploring Exped.: Zoophytes 353 The transverse septa are sometimes seen to extend quite across the whole interior.

1946 H. Woods Palæontol. Invertebr. (ed. 8) 20 In the porcellanous and the simpler vitreous Foraminifera each septum..consists of a single lamella which is really the front wall of the preceding chamber.

1989 P. V. Rich et al. Fossil Bk. (rev. ed.) xviii. 283 Many writers have tried to explain why ammonoid septa crumpled, making more and more ornate sutures.

2013 D. R. Prothero Bringing Fossils to Life (ed. 3) xiii. 318/2 Scleractinians are similar to rugosids in that they insert the septa in their corallite in a predictable fashion.

II. Other senses.

†a. An enclosure for domesticated animals; a paddock. Cf. sept n.² 1. Obsolete. rare.

ΘΚΠ

the world > food and drink > farming > farm > farmland > grassland > [noun] > pasture > enclosed pasture

ham901

green yard1418

pasture field1464

ward1473

butt1542

paddock1547

septuma1552

staff1786

camp1877

night paddock1922

run-off1933

a1552 J. Leland Itinerary (1710) I. 6 Asscheby [i.e. Castle Ashby]..wher hath [bene a Castle] that now is clene downe, and is made but a septum for bestes.

b. A partition serving to enclose or shut off a space; a dividing wall, hedge, etc. Formerly also: †a communion rail (obsolete). Cf. sept n.² 2.

ΘΚΠ

the world > space > relative position > condition or fact of being interjacent > [noun] > that which is interjacent > and separates two things > a partition

interclose1344

enterclosea1430

partition1545

distinction1578

membrane1631

septuma1638

diaphragm1660

midriff1660

cloison1693

separationc1720

dispartation1779

separator1881

a1638 J. Mede Diatribae (1642) 190 Iosephus..tels us of certain little pillars, or columnes, placed by the Lorica, or Septum, which severed this Court from the rest.

c1638 in Mod. Lang. Rev. (1946) 41 110 [The wardens of Bradley are fined] 1s. 6d. for want of the septin About the table.

1733 J. Tull Horse-hoing Husbandry xi. 58 When the Plants of the Outer Row are too numerous on a shallow Mould, the Roots of these, which are always thickest near the Bottom of the Stems, make a Septum or Hedge betwixt the Roots of the Middle..Row and the Interval.

1862 W. A. Miller Elements Chem. (ed. 2) III. ii. §4. 114 It [sc. vegetable parchment] may be substituted for bladder as a septum, in electrolytic operations, with great advantage.

1871 ‘Stonehenge’ Man. Brit. Rural Sports (ed. 9) i. i. ii. §5. 38 Two pieces of stamped brass forming a strong septum in the cap.

1908 Proc. Amer. Acad. Arts & Sci. 43 516 I introduced a septum of glass in the middle of the tube constituting the canal region.

2010 S. Afr. Archaeol. Bull. 65 68/1 The roof is arched and at the base of the chamber the roof forms a septum between the eastern and the western chamber.

4. Geology. A narrow deposit of a mineral or minerals forming a partition within a larger body of rock.

ΘΚΠ

the world > the earth > structure of the earth > structural features > discontinuity or unconformity > [noun] > partition

septuma1728

the world > the earth > minerals > mineral deposits > features of stratum or vein > [noun] > obstruction or fault

rider1653

fore-stone1668

jamb1721

septuma1728

horse1778

fault1796

heave1802

girdle1819

burnt stuff1852

swine back1883

white horse1886

a1728 J. Woodward Attempt Nat. Hist. Fossils Eng. (1729) i. 81 In those Bodies that are invested with a Crust, the Septa lessen and grow thinner as they approach the Crust.

1851 G. A. Mantell Petrifactions iv. §6. 407 The dark partitions, or septa, are veins of spar.

1936 Jrnl. Geol. (Chicago) 44 251 It [sc. obsidian] is now represented by secondary minerals deposited along the cracks, where they form crystalline septa.

2006 T. Schlüter Geol. Atlas Afr. iv. 32/1 The main structural feature is a migmatitic core 300 km in diameter, where gneiss septa are still present.

5. Electronics. A metal plate placed transversely across a waveguide and attached to the walls by conducting joints.

ΚΠ

1938 U.S. Patent 2,106,521 3/1 The tube may be a triode..in which the grid is a perforated metal septum that divides the tube into two separate chambers.

1947 L. G. H. Huxley Surv. Princ. & Pract. Wave Guides ii. 39 The original electromagnetic field..transforms to that shown..where the magnetic loops are bent over so that their longitudinal portions run in opposite senses, one on each side of the septum.

2019 B. F. Burke et al. in Introd. Radio Astron. (ed. 4) vii. 125 The phase of the coupled linear mode is opposite on either side of the septum.

Compounds

As a modifier in sense 1b, chiefly with reference to surgical, cultural, and cosmetic procedures performed on the nasal septum.

ΚΠ

1882 Arch. Laryngol. 3 300 Steele's stellate forceps, Roberts' fenestrated punch, Goodwillie's septum perforator.

1888 Illustr. Catal. Surg., Dental, & Vet. Instruments (Noyes Bros. & Cutler) 118 (caption) Steele's Septum Punching Forceps.

1912 Brit. Med. Jrnl. 26 Oct. 1132/2 An operative procedure in the region of the infundibular cells, in presence of septum deviation, is..a very bold undertaking.

1921 Anthropos 24 421 In Hindu India it appears that the practice of piercing the walls of the nostrils instead of the septum is an adaptation or imitation of septum piercing introduced by the Moslem invaders.

1997 J.-C. Miller Body Art Bk. ii. 23 For a (much) milder look, a septum retainer is used to maintain your septum piercing when you don't want to wear jewelry.

2015 New Yorker 13 Apr. 17/1 A sprightly barkeeper wearing a septum ring and a ‘Brooklyn’ cap.

This entry has been updated (OED Third Edition, September 2020; most recently modified version published online March 2022).

单词	septum
释义	septumn. Brit. /ˈsɛptəm/, U.S. /ˈsɛptəm/ Inflections: Plural septa. Forms: 1500s– septum, 1600s septin. Origin: A borrowing from Latin. Etymon: Latin sēptum. Etymology: < classical Latin sēptum, saeptum enclosed space, fold, paddock, voting enclosure, surrounding wall or fence, barrier, partition, division, use as noun of neuter past participle of sēpīre , saepīre to enclose < sēpēs , saepēs hedge, of uncertain origin. Compare sept n.² I. Senses relating to parts of animals, plants, and other organisms. 1. a. Anatomy and Zoology. Originally (more fully septum transversum): the diaphragm, which separates the thorax and abdomen (obsolete). In later use: any of various structures that form a dividing wall or partition between two cavities or areas of tissue in the body of a human or other animal. Frequently with distinguishing Latin or English word. [Compare classical Latin transversum septum transverse septum (Celsus).] ΘΚΠ the world > life > biology > physical aspects or shapes > specific areas or structures > [noun] > separation or partition mediastinum?a1425 mediastine?c1425 septum1543 paries1694 interseptum1753 cameration1863 abstriction1877 abjunction1887 macroseptum1904 1543 B. Traheron Interpr. Straunge Wordes in tr. J. de Vigo Most Excellent Wks. Chirurg. sig. ζζvi.^v/1 And the nether part of thorax is called septum transuersum. 1578 J. Banister Hist. Man iv. f. 54 Where the fleshy part of Septum doth degenerate into a Tendon. 1615 H. Crooke Μικροκοσμογραϕια 147 (caption) The second exhibiteth the Kidney where all the substance or partition which is called Septum renis is sliced away in a compasse, that the second cauity may better appeare. 1726 A. Monro Anat. Humane Bones 86 In some Sculls, besides the large osseus Septum, there are found in each Sinus several bony Pillars. 1783 Philos. Trans. 1782 (Royal Soc.) 72 442 If they be viewed with a deep magnifier, every cone appears divided transversely by two or three internal septa or partitions. 1803 C. Bell Anat. Human Body III. i. i. 15 Those septa, or, as they are called, processes of the dura mater, being extended across from the internal surface of the cranium, support the brain in the sudden motions of the body. 1874 Proc. Royal Soc. 1873–4 22 145 In miliary tuberculosis of man..we see that the first changes take place in the alveoli and interalveolar septa. 1951 G. R. de Beer Vertebr. Zool. (ed. 2) iv. 43 They extend in the septum that divides the myotomes horizontally, and are called ‘dorsal’ ribs. 1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) iii. 276/1 The grooves between segments [of annelid worms] coincide with internal compartments, often separated by transverse sheets of tissue (septa), containing serially repeated nervous, muscle, and excretory systems. 2014 A. Roberts Incredible Unlikeliness of Being 231 As the cloaca on the inside becomes divided by the urorectal septum, the cloacal membrane on the outside also becomes divided in two. b. spec. More fully nasal septum. The structure that divides the nasal cavity into right and left sides, made of bone and cartilage and lined with mucous membrane. [Compare post-classical Latin septum narium septum of the nostrils (1568 or earlier), and septum nasi septum of the nose (1562 or earlier).] ΘΚΠ the world > life > the body > external parts of body > head > face > nose > [noun] > septum nose gristleOE crete?1541 nose-bridge1572 bridle1578 septum1615 1615 H. Crooke Μικροκοσμογραϕια xiii. viii. 950 The third bone..is called Septum or the partition, because it distinguisheth the cauity of the nostrilles into two parts. 1781 T. Pennant Hist. Quadrupeds II. 530 The nostrils oval, and divided by a septum. 1832 D. Brewster Lett. Nat. Magic xii. 312 Some of the party experienced sharp pains in the tips of their ears and in the septum of the nose. 1957 Chronicle-Telegram (Elyria, Ohio) 20 Feb. 36/2 Appendicitis was succeeded as a fashionable disease by deviated septa. 2008 Daily Star (Nexis) 14 Apr. 5 Natasha was such a heavy cocaine user the drug had eaten away the septum of her nose. c. spec. The structure that divides the heart into right and left sides, consisting of strong fibrous tissue and muscle. Also: the section of this separating the heart's lower chambers (more fully ventricular septum, interventricular septum) or upper chambers (more fully atrial septum, auricular septum, interatrial septum). [Compare post-classical Latin septum cordis septum of the heart (1568 or earlier).] ΚΠ 1615 H. Crooke Μικροκοσμογραϕια vi. xii. 372 (caption) The wall betwixt the ventricles of the heart called Septum. 1662 N. Culpeper & A. Cole tr. T. Bartholin Anatomy ii. vii. 110/2 Gassendus saw Payanus at Ajax shew the Septum of the Heart to have through-fares [L. septum cordis pervium]. 1819 A. Rees Cycl. XVII. at Heart The younger the fœtus is, the larger is this opening, so that there seems to be scarcely any auricular septum. 1879 St. George's Hosp. Rep. 9 257 Heart. A small abscess in inter-ventricular septum. 1909 Proc. Royal Soc. B. 81 151 The first ganglion cells that appear in the embryonic heart lie in the atrial septum. 1986 Times-Standard (Eureka, Calif.) 1 Oct. 16/2 A heart attack does not invariably involve the ventricular septum. 2002 Esquire Nov. 24/1 Condition called hypertrophic cardiomyopathy (HCM), in which the heart's septum is dangerously enlarged, blocking the flow of blood and, in many cases, causing death. d. spec. More fully septum lucidum, septum pellucidum. A structure formed of two thin layers of nerve cells and fibres, located in the midline of the brain between the anterior horns of the lateral ventricles, and forming part of the limbic system. [In septum lucidum < post-classical Latin septum lucidum (1561 or earlier). In septum pellucidum < post-classical Latin septum pellucidum (1677 or earlier in this sense).] ΘΚΠ the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > ventricles > partition between septum lucidum1698 basin1728 1615 H. Crooke Μικροκοσμογραϕια vii. x. 460 This septum before it be stretched is loose & rugous and doeth not shine. 1698 W. Cowper Anat. Humane Bodies App., 7th Table, fig. 30 That part of the corpus callosum by Vieussens, call'd fornix vera, between which, and the fornix..is plac'd the septum lucidum. 1745 Med. Ess. & Observ. Pract. Physic & Surg. II. 105 The Septum Pellucidum was very distinctly seen. 1824 Anat. Brain 53 It [sc. the fornix] supports in some degree the septum pellucidum. 1942 F. A. Mettler Neuroanatomy iv. 97 Stretched between the copula, rostrum, genu and anterior half of the corpus callosum is a thin, vertically arranged membrane, the translucent septum (s. pellucidum). 2005 Sci. Amer. (U.K. ed.) Oct. 51/1 Stimulation of a limbic region called the septum could trigger euphoria, strong enough in some cases to counteract depression and even physical pain. 2. a. Biology. A thin structure forming a dividing wall or partition between parts of a plant.Such partitions typically include those separating the parts of a compound ovary or spore, or between cells, as between daughter cells during binary fission, or between adjacent compartments of a fungal hypha. ΘΚΠ the world > life > biology > substance > cell > parts of cell > [noun] > wall or membranes septum1720 cell wall1840 valve1852 periplast1853 stroma1872 ghost1879 endoplasmic reticulum1883 plasma membrane1893 plasmalemma1923 unit membrane1958 purple membrane1968 the world > plants > part of plant > cell or aggregate tissue > [noun] > cell > parts of cell > cell wall and parts septum1720 pit1839 sieve-plate1875 sieve-pore1875 sieve-tube1875 anticlinal1882 periclinal1882 sieve-vessel1882 pit cavity1884 pit membrane1884 middle lamella1887 torus1887 tonoplast1895 pit canal1911 pit chamber1917 pit aperture1918 pit pair1933 pit field1934 margo1965 sieve-tissue- 1720 P. Blair Bot. Ess. ii. 54 The Placentæ..sometimes..arise from an Axis medius,..fram'd by the Conjunction of the three Septa, which meet in the Center. 1830 J. Lindley Introd. Nat. Syst. Bot. 159 A fruit with the valves alternate with the septa. 1870 J. D. Hooker Student's Flora Brit. Islands 85 Pod 2-valved, turgid or flat with a longitudinal septum. 1941 V. J. Chapman Introd. Study Algae 57 Nuclear division now takes place near this end of the cell and a septum is laid down between the two daughter nuclei. 1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) iv. 360/2 Their reproductive structures (spores and gametangia) are cut off by complete, unperforated septa from the rest of the mycelium. 2005 E. Heuvelink Tomatoes iii. 72 The pericarp wall may also be divided into the outer wall, radial walls (septa), which separate adjacent locules, and the inner wall (columella). b. Zoology. A thin plate or wall forming part of a shell or exoskeleton and wholly or partly dividing the enclosed space; a partition between adjacent sections of a chambered shell; each of the radiating plates in the cell of a coral. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Anthozoa Actinozoa > member of > septum septum1786 the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > Testacea (shelled molluscs) > shelled mollusc > shell > part of auricle1665 heel1673 lip1681 mouth1681 whirl1681 rib1711 antihelix1721 canal1734 columella1755 vesture1755 body whirl1776 fent1776 pillar1776 pillar-lip1776 septum1786 aperture1794 body whorl1807 costa1812 seam1816 spine1822 umbo1822 varix1822 peristome1828 summit1828 nucleus1833 concameration1835 lunula1835 nympha1836 nymph1839 lunule1842 peritreme1848 body chamber1851 axis1866 umbone1867 liration1904 1786 Philos. Trans. (Royal Soc.) 76 164 Horizontal sections of the shell, in order to show the internal structure, or the appearance of the septa. 1815 S. Brookes Introd. Conchol. 94 The septa transverse and perforated by a tube. 1846 J. D. Dana U.S. Exploring Exped.: Zoophytes 353 The transverse septa are sometimes seen to extend quite across the whole interior. 1946 H. Woods Palæontol. Invertebr. (ed. 8) 20 In the porcellanous and the simpler vitreous Foraminifera each septum..consists of a single lamella which is really the front wall of the preceding chamber. 1989 P. V. Rich et al. Fossil Bk. (rev. ed.) xviii. 283 Many writers have tried to explain why ammonoid septa crumpled, making more and more ornate sutures. 2013 D. R. Prothero Bringing Fossils to Life (ed. 3) xiii. 318/2 Scleractinians are similar to rugosids in that they insert the septa in their corallite in a predictable fashion. II. Other senses. 3. †a. An enclosure for domesticated animals; a paddock. Cf. sept n.² 1. Obsolete. rare. ΘΚΠ the world > food and drink > farming > farm > farmland > grassland > [noun] > pasture > enclosed pasture ham901 green yard1418 pasture field1464 ward1473 butt1542 paddock1547 septuma1552 staff1786 camp1877 night paddock1922 run-off1933 a1552 J. Leland Itinerary (1710) I. 6 Asscheby [i.e. Castle Ashby]..wher hath [bene a Castle] that now is clene downe, and is made but a septum for bestes. b. A partition serving to enclose or shut off a space; a dividing wall, hedge, etc. Formerly also: †a communion rail (obsolete). Cf. sept n.² 2. ΘΚΠ the world > space > relative position > condition or fact of being interjacent > [noun] > that which is interjacent > and separates two things > a partition interclose1344 enterclosea1430 partition1545 distinction1578 membrane1631 septuma1638 diaphragm1660 midriff1660 cloison1693 separationc1720 dispartation1779 separator1881 a1638 J. Mede Diatribae (1642) 190 Iosephus..tels us of certain little pillars, or columnes, placed by the Lorica, or Septum, which severed this Court from the rest. c1638 in Mod. Lang. Rev. (1946) 41 110 [The wardens of Bradley are fined] 1s. 6d. for want of the septin About the table. 1733 J. Tull Horse-hoing Husbandry xi. 58 When the Plants of the Outer Row are too numerous on a shallow Mould, the Roots of these, which are always thickest near the Bottom of the Stems, make a Septum or Hedge betwixt the Roots of the Middle..Row and the Interval. 1862 W. A. Miller Elements Chem. (ed. 2) III. ii. §4. 114 It [sc. vegetable parchment] may be substituted for bladder as a septum, in electrolytic operations, with great advantage. 1871 ‘Stonehenge’ Man. Brit. Rural Sports (ed. 9) i. i. ii. §5. 38 Two pieces of stamped brass forming a strong septum in the cap. 1908 Proc. Amer. Acad. Arts & Sci. 43 516 I introduced a septum of glass in the middle of the tube constituting the canal region. 2010 S. Afr. Archaeol. Bull. 65 68/1 The roof is arched and at the base of the chamber the roof forms a septum between the eastern and the western chamber. 4. Geology. A narrow deposit of a mineral or minerals forming a partition within a larger body of rock. ΘΚΠ the world > the earth > structure of the earth > structural features > discontinuity or unconformity > [noun] > partition septuma1728 the world > the earth > minerals > mineral deposits > features of stratum or vein > [noun] > obstruction or fault rider1653 fore-stone1668 jamb1721 septuma1728 horse1778 fault1796 heave1802 girdle1819 burnt stuff1852 swine back1883 white horse1886 a1728 J. Woodward Attempt Nat. Hist. Fossils Eng. (1729) i. 81 In those Bodies that are invested with a Crust, the Septa lessen and grow thinner as they approach the Crust. 1851 G. A. Mantell Petrifactions iv. §6. 407 The dark partitions, or septa, are veins of spar. 1936 Jrnl. Geol. (Chicago) 44 251 It [sc. obsidian] is now represented by secondary minerals deposited along the cracks, where they form crystalline septa. 2006 T. Schlüter Geol. Atlas Afr. iv. 32/1 The main structural feature is a migmatitic core 300 km in diameter, where gneiss septa are still present. 5. Electronics. A metal plate placed transversely across a waveguide and attached to the walls by conducting joints. ΚΠ 1938 U.S. Patent 2,106,521 3/1 The tube may be a triode..in which the grid is a perforated metal septum that divides the tube into two separate chambers. 1947 L. G. H. Huxley Surv. Princ. & Pract. Wave Guides ii. 39 The original electromagnetic field..transforms to that shown..where the magnetic loops are bent over so that their longitudinal portions run in opposite senses, one on each side of the septum. 2019 B. F. Burke et al. in Introd. Radio Astron. (ed. 4) vii. 125 The phase of the coupled linear mode is opposite on either side of the septum. Compounds As a modifier in sense 1b, chiefly with reference to surgical, cultural, and cosmetic procedures performed on the nasal septum. ΚΠ 1882 Arch. Laryngol. 3 300 Steele's stellate forceps, Roberts' fenestrated punch, Goodwillie's septum perforator. 1888 Illustr. Catal. Surg., Dental, & Vet. Instruments (Noyes Bros. & Cutler) 118 (caption) Steele's Septum Punching Forceps. 1912 Brit. Med. Jrnl. 26 Oct. 1132/2 An operative procedure in the region of the infundibular cells, in presence of septum deviation, is..a very bold undertaking. 1921 Anthropos 24 421 In Hindu India it appears that the practice of piercing the walls of the nostrils instead of the septum is an adaptation or imitation of septum piercing introduced by the Moslem invaders. 1997 J.-C. Miller Body Art Bk. ii. 23 For a (much) milder look, a septum retainer is used to maintain your septum piercing when you don't want to wear jewelry. 2015 New Yorker 13 Apr. 17/1 A sprightly barkeeper wearing a septum ring and a ‘Brooklyn’ cap. This entry has been updated (OED Third Edition, September 2020; most recently modified version published online March 2022). < n.1543
随便看	canadian-born canadian-built canadian-made canadian-owned canadian-style canadiana canadianamerican canadianborn canadianbuilt canadianise canadianism canadianization canadianize canadianized canadianizing canadianmade canadianness canadianowned canadianstyle canadien canadienne canadoe canadoe wine canage canaglia