lepto-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

combining form of Greek λεπτός fine, small, thin, delicate, used in many terms of Zoology and Botany.

Categories »

leptocardian adj. and n.

Brit.

/ˌlɛptə(ʊ)ˈkɑːdɪən/

U.S.

/ˌlɛptoʊˈkɑrdiən/

/ˌlɛptəˈkɑrdiən/

[Greek καρδία heart] Zoology (a) adj. belonging to the Leptocardii, the lowest group of true vertebrates, having contractile pulsating sinuses instead of a heart; (b) n. a vertebrate belonging to this group ( Cent. Dict. 1889).

leptocephalan n.

Brit.

/ˌlɛptə(ʊ)ˈsɛf(ə)lən/

/ˌlɛptə(ʊ)ˈsɛfl̩ən/

/ˌlɛptə(ʊ)ˈkɛf(ə)lən/

/ˌlɛptə(ʊ)ˈkɛfl̩ən/

U.S.

/ˌlɛptoʊˈsɛfələn/

ΘΚΠ

the world > animals > fish > class Osteichthyes or Teleostomi > subclass Actinopterygii > subdivision Teleostei > [noun] > order Anguilliformes > family Leptocephalidae > member of

leptocephalus1769

glass-eel1840

leptocephalan1842

leptocephalid1882

1842 W. T. Brande Dict. Sci., Lit. & Art 655/1 Leptocephalans, Leptocephalidæ, the name of a family of fishes characterized by the smallness of the head, of which the genus Leptocephalus is the type.

leptocephalid n.

Brit.

/ˌlɛptə(ʊ)ˈsɛf(ə)lɪd/

/ˌlɛptə(ʊ)ˈkɛf(ə)lɪd/

U.S.

/ˌlɛptoʊˈsɛfəlɪd/

[Greek κεϕαλή head] Ichthyology a fish of the family Leptocephalidæ.

ΘΚΠ

the world > animals > fish > class Osteichthyes or Teleostomi > subclass Actinopterygii > subdivision Teleostei > [noun] > order Anguilliformes > family Leptocephalidae > member of

leptocephalus1769

glass-eel1840

leptocephalan1842

leptocephalid1882

1882 Q. Rev. Jan. 251 These Leptocephalids are small, narrow, elongate.

leptocephalic adj.

Brit.

/ˌlɛptə(ʊ)sᵻˈfalɪk/

/ˌlɛptə(ʊ)kɛˈfalɪk/

U.S.

/ˌlɛptoʊsəˈfælɪk/

having a narrow skull; exhibiting leptocephaly; Ichthyology, as the designation of certain flatfish (cf. leptocephalid n.).

ΘΚΠ

the world > life > the body > structural parts > bone or bones > skull > skull measurement > [adjective] > types

short-headed1802

beloid1833

microcephalous1840

platycephalous1846

long-skulled1847

round-headed1847

brachycephalic1849

dolichocephalic1849

acrocephalic1855

megacephalous1857

microcephalic1857

cymbocephalic1861

macrocephalous1861

platycephalic1861

macrocephalic1863

phaenozygous1863

dolichocephalous1864

homoeocephalic1866

mecistocephalic1866

mecocephalic1866

mesocephalic1866

orthocephalic1866

stenocephalic1866

cryptozygous1867

megalocephalic1868

aphanozygous1871

brachycephalous1872

orthocephalous1872

mesaticephalic1873

plagiocephalic1873

plagiocephalic1874

mesaticephalous1876

mesorrhine1877

platyrrhine1877

cylindro-cephalic1878

eurycephalic1878

hypsistenocephalic1878

megaseme1878

mesoseme1878

microseme1878

oxycephalic1878

oxyklinocephalic1878

platybasic1878

pyrgocephalic1878

tapinocephalic1878

megacephalic1879

hypsiconchous1885

mesoconchous1885

chamaeprosopic1886

leptocephalic1886

mesorrhinian1887

long-headed1888

tectocephalic1888

mecistocephalous1890

megalocephalous1890

plagiocephalous1890

mesocephal1891

stegoid1894

brachycranial1902

chamaecephalic1902

chamaeconchic1902

chamaecranial1902

macrocranial1902

platycranial1902

stenocranial1904

mesoconch1905

mesoconchic1909

hypsiconch1920

Lapponoid1939

hypsiconchic1960

1886 Pop. Sci. Monthly May 114 Many young flat-fish..assume that peculiarly elongated and strange form known as leptocephalic.

leptocephaly n.

Brit.

/ˌlɛptə(ʊ)ˈsɛfəli/

/ˌlɛptə(ʊ)ˈsɛfl̩i/

/ˌlɛptə(ʊ)ˈkɛfəli/

/ˌlɛptə(ʊ)ˈkɛfl̩i/

U.S.

/ˌlɛptoʊˈsɛfəli/

narrowness of skull.

ΘΚΠ

the world > life > the body > structural parts > bone or bones > skull > skull measurement > [noun] > types of skull > condition of having

long-headedness1818

microcephalia1849

microcephaly1863

leptocephaly1864

platycephaly1864

dolichocephalism1865

mesaticephalism1865

brachistocephaly1866

dolichocephaly1866

mecistocephaly1866

acrocephaly1870

brachycephaly1871

megalocephaly1878

pyrgocephaly1878

stenocephaly1878

brachycephalism1880

platyrrhiny1880

hypsistenocephaly1881

mesocephaly1883

short-headedness1883

orthocephaly1884

oxycephaly1885

mesocephalism1888

macrocephalia1889

macrocephaly1889

broad-headedness1890

mesaticephaly1891

chamaeconchy1902

chamaeprosopy1902

hypsiconchy1902

mesorrhiny1902

mesoconchy1904

tower skull1905

1864 J. Hunt tr. C. Vogt Lect. on Man ii. 30 Platycephaly stands opposed to leptocephaly, though connected with it by gradual transitions.

leptodactyl adj. and n.

Brit.

/ˌlɛptəˈdakt(ᵻ)l/

U.S.

/ˌlɛptəˈdækt(ə)l/

[Greek δάκτυλος toe] Ornithology (a) adj. having thin or slender toes; (b) n. a bird with slender toes.

ΚΠ

a1864 Hitchcock (cited in Worcester) Leptodactyl..Leptodactylous.

leptodactylous adj.

Brit.

/ˌlɛptə(ʊ)ˈdaktᵻləs/

/ˌlɛptə(ʊ)ˈdaktl̩əs/

U.S.

/ˌlɛptəˈdæktələs/

/ˌlɛptoʊˈdæktələs/

[-ous suffix] = leptodactyl adj. and n.

1855 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Leptodactylus, leptodactylous.

Categories »

leptodermous adj.

Brit.

/ˌlɛptə(ʊ)ˈdəːməs/

U.S.

/ˌlɛptəˈdərməs/

/ˌlɛptoʊˈdərməs/

[Greek δέρμα skin] Botany having thin skin, said of moss-capsules when pliable ( New Sydenham Soc. Lexicon 1888).

Categories »

leptoglossal adj.

Brit.

/ˌlɛptə(ʊ)ˈɡlɒsl/

U.S.

/ˌlɛptəˈɡlɔs(ə)l/

/ˌlɛptəˈɡlɑs(ə)l/

/ˌlɛptoʊˈɡlɔs(ə)l/

/ˌlɛptoʊˈɡlɑs(ə)l/

[Greek γλῶσσα tongue] Zoology of or pertaining to the division Leptoglossa of lizards, having slender tongues ( Cent. Dict.).

leptoglossate adj. and n.

Brit.

/ˌlɛptə(ʊ)ˈɡlɒsət/

/ˌlɛptə(ʊ)ˈɡlɒseɪt/

U.S.

/ˌlɛptəˈɡlɔsət/

/ˌlɛptəˈɡlɑsət/

/ˌlɛptoʊˈɡlɔˌseɪt/

/ˌlɛptoʊˈɡlɑˌseɪt/

(a) adj. leptoglossal; (b) n. a lizard of this group ( Cent. Dict.).

leptomeningitis n.

Brit.

/ˌlɛptə(ʊ)mɛnᵻnˈdʒʌɪtᵻs/

U.S.

/ˌlɛptoʊˌmɛnənˈdʒaɪdᵻs/

Pathology inflammation of the pia mater and the arachnoid (the leptomeninges).

ΚΠ

1881 A. Flint Treat. Princ. Med. (ed. 5) 693 Sometimes inflammation of the pia mater is denominated leptomeningitis, in distinction from pachymeningitis which is inflammation of the dura mater.

leptophloem n.

Brit.

/ˌlɛptə(ʊ)ˈfləʊɛm/

U.S.

/ˌlɛptoʊˈfloʊˌɛm/

[see phloem n.] Botany in certain mosses (see quot.).

ΚΠ

1889 A. W. Bennett & G. R. M. Murray Handbk. Cryptogamic Bot. 146 A leptophloem or rudimentary phloem, in which the storing up and conduction of the food-material takes place.

Categories »

leptophyllous adj.

Brit.

/ˌlɛptə(ʊ)ˈfɪləs/

U.S.

/ˌlɛptəˈfɪləs/

/ˌlɛptoʊˈfɪləs/

[Greek ϕύλλον leaf] Botany slender-leaved (Mayne Expos. Lexicon Med. Sci. 1855).

leptoprosope n.

Brit.

/ˌlɛptə(ʊ)ˈprɒsəʊp/

U.S.

/ˌlɛptoʊˈprɔˌsoʊp/

/ˌlɛptoʊˈprɑˌsoʊp/

[Greek πρόσωπον face] narrowness of face; the condition of having a long narrow-faced skull ( Cent. Dict.).

leptoprosopic adj.

Brit.

/ˌlɛptə(ʊ)prəˈsəʊpɪk/

U.S.

/ˌlɛptoʊprəˈsoʊpɪk/

/ˌlɛptoʊprəˈsɑpɪk/

having a long narrow face.

1889 Garson in Jrnl. Anthropol. Inst. 18 23 The midfacial index..in the three Yasinese skulls..is very constant and averages 54·2, making them dolichofacial, or leptoprosopic.

leptorrhine adj.

Brit.

/ˈlɛptə(ʊ)rɪn/

/ˈlɛptə(ʊ)rʌɪn/

U.S.

/ˈlɛptəˌraɪn/

/ˈlɛptərən/

[ < Greek ῥῑν-, ῥίς nose] having a long narrow nose; having a nasal index of 47 or under.

ΘΚΠ

the world > life > the body > external parts of body > head > face > nose > [adjective] > types of nose > having

cammed?c1350

camoised1393

nosed?1440

hook-nosed1519

snat-nosed1519

flat-nosed1530

bottle-nosed1566

chamoy-nosed1598

saddle-nosed1598

swine-snouted1600

camois-nosed1601

round-nosed1611

nosy1620

flat-nose1636

simous1656

sharp-nosed1675

tutty-nosed1681

Roman-nosed1688

snut-nosed1706

snub-nosed1725

camois1745

blunt-nosed1772

pug-nosed1788

snipy1825

button-nosed1830

nip-nosed1831

leptorrhinian1878

leptorrhine1880

snub1883

knob-nosed1886

long-nose1896

Tartar-nosed1897

Ally Sloper1901

beaky-nosed1923

1880 W. B. Dawkins Early Man in Brit. vii. 192 The leptorhine rhinocerous.

1884 J. E. Lee tr. Römer Bone Caves of Ojcow 31 In both the Wierzchow skulls the nose is leptorrhine.

leptorrhinian adj.

Brit.

/ˌlɛptə(ʊ)ˈrɪnɪən/

/ˌlɛptə(ʊ)ˈrʌɪnɪən/

U.S.

/ˌlɛptəˈrɪniən/

/ˌlɛptəˈraɪniən/

ΘΚΠ

the world > life > the body > external parts of body > head > face > nose > [adjective] > types of nose > having

cammed?c1350

camoised1393

nosed?1440

hook-nosed1519

snat-nosed1519

flat-nosed1530

bottle-nosed1566

chamoy-nosed1598

saddle-nosed1598

swine-snouted1600

camois-nosed1601

round-nosed1611

nosy1620

flat-nose1636

simous1656

sharp-nosed1675

tutty-nosed1681

Roman-nosed1688

snut-nosed1706

snub-nosed1725

camois1745

blunt-nosed1772

pug-nosed1788

snipy1825

button-nosed1830

nip-nosed1831

leptorrhinian1878

leptorrhine1880

snub1883

knob-nosed1886

long-nose1896

Tartar-nosed1897

Ally Sloper1901

beaky-nosed1923

1878 R. T. H. Bartley tr. P. Topinard Anthropol. ii. ii. 257 The leptorrhinians, with the nasal skeleton elongated.

1891 Athenæum 25 July 132/3 Dr. Topinard communicates documents on the nasal index of the living... 49½ per cent...were leptorhinian..and 43 per cent. mesorhinian.

leptorrhinic adj.

Brit.

/ˌlɛptə(ʊ)ˈrʌɪnɪk/

U.S.

/ˌlɛptəˈraɪnɪk/

/ˌlɛptoʊˈraɪnɪk/

leptosperm n.

Brit.

/ˈlɛptə(ʊ)spəːm/

U.S.

/ˈlɛptəˌspərm/

[Greek σπέρμα seed] a plant of the genus Leptospermum of myrtaceous shrubs ( Cent. Dict.).

leptosporangiate adj.

Brit.

/ˌlɛptə(ʊ)spəˈran(d)ʒɪət/

U.S.

/ˌlɛptoʊspəˈrændʒ(i)ət/

[see sporangium n.] Botany having sporangia which are developed from a single epidermic cell.

ΚΠ

1887 H. E. F. Garnsey tr. K. Goebel Outl. Classif. Plants 193 Two divisions of the Filicineae, the Leptosporangiate and the Eusporangiate.

leptothrix n.

Brit.

/ˈlɛptə(ʊ)θrɪks/

U.S.

/ˈlɛptəˌθrɪks/

[Greek θρίξ hair] ‘a fungus belonging to the Order Schizomycetes, consisting of very thin and long, indistinctly segmented, straight threads’ ( New Sydenham Soc. Lexicon); also attributive.

ΘΚΠ

the world > life > biology > organism > micro-organism > bacterium > [noun] > types of

vibrio1850

micrococcus1870

microzyme1870

Spirillum1875

mycothrix1876

leptothrix1877

Spirochaete1877

streptococcus1877

Actinomyces1879

frogspawn1880

schizophyte1880

schizomycetes1881

gonococcus1882

saprophile1882

vibrion1882

coccus1883

diplococcus1883

streptobacteria1883

Clostridium1884

actinomycetes1885

pneumococcus1885

macrococcus1887

staphylococcus1887

iron bacterium1888

Proteus1888

ferrobacterium1890

meningococcus1890

rhizobium1890

sulphobacteria1890

nitrobacterium1891

Streptothrix1891

sulphur bacterium1891

myxobacter1892

Myxococcus1892

tetracoccus1893

coli1894

Pasteurella1895

pyrotoxin1895

Gaertner1897

purple bacterium1897

myxobacterium1898

pseudomonas1899

thiobacteria1900

treponema1908

corynebacterium1909

mycobacterium1909

Salmonella1913

Neisseria1915

botulinum1916

rickettsia1916

leptospira1918

acetobacter1920

Brucella1920

pseudomonad1921

strep1927

enterobacterium1929

opportunist1937

eubacterium1939

agrobacterium1942

persister1944

Moraxella1948

enteric1956

streptomycete1956

leptospire1957

transformant1957

lysogen1958

listeria1961

C. difficile1962

yersinia1967

Campylobacter1971

cyanobacterium1973

coryneform1976

eubacterium1977

legionella1979

acetogen1982

C. diff.1990

acidophilous1996

1877 A. W. Bennett tr. O. W. Thomé Text-bk. Struct. & Physiol. Bot. vi. 259 The forms known as Termo, Bacterium, Vibrio, Spirillum, Leptothrix, &c.

1882 Pop. Sci. Monthly Mar. 718 Bacteria attached end to end in a string form filaments of leptothrix.

1885 E. Klein Micro-org. 89 Long leptothrix filaments composed of short joints.

1897 T. C. Allbutt et al. Syst. Med. IV. 743 The leptothrix fungus and spores are almost invariably present in the concretions of tartar that gather round the teeth.

leptoxylem n.

Brit.

/ˌlɛptə(ʊ)ˈzʌɪləm/

U.S.

/ˌlɛptoʊˈzaɪləm/

/ˌlɛptəˈzaɪləm/

[xylem n.] Botany a structure in certain mosses (see quot.).

ΚΠ

1889 A. W. Bennett & G. R. M. Murray Handbk. Cryptogamic Bot. 146 A leptoxylem or rudimentary xylem which serves for the conduction of the transpiration-current to the lower portion of the sporange furnished with stomates.

Draft additions 1997

leptomeninx n.

Brit.

/ˌlɛptə(ʊ)ˈmiːnɪŋks/

/ˌlɛptə(ʊ)ˈmɛnɪŋks/

U.S.

/ˌlɛptoʊˈminɪŋ(k)s/

/ˌlɛptoʊˈmɛnɪŋ(k)s/

(pl. leptomeninges

Brit.

/ˌlɛptə(ʊ)mᵻˈnɪn(d)ʒiːz/

U.S.

/ˌlɛptoʊməˈnɪn(d)ʒiz/

) [meninx n.] Anatomy the arachnoid and pia mater considered together; usually in plural in same sense.

ΘΚΠ

the world > life > the body > nervous system > cerebrospinal axis > [noun] > membranes > considered with the arachnoid

leptomeninx1889

1889 Cent. Dict. Leptomeninges.

1893 I. K. Funk et al. Standard Dict. Eng. Lang. I Leptomeninx.

1899 T. C. Allbutt et al. Syst. Med. VII. 712 The leptomeninges stripping, on the contrary, with undue ease.

1934 R. R. Grinker Neurology iii. 62 Recent experiments have been interpreted to suggest that the primitive leptomeninx is of ectodermal origin.

1934 R. R. Grinker Neurology iii. 62 The external layer of the leptomeninx lies underneath the dura mater.

1959 Roizin & Kolb in Kies & Alvord ‘Allergic’ Encephalomyelitis i. 6 The lesions..were generally irregular in form and size, involving the gray and white matter of the cerebral cortex, and extending into the surrounding areas, including the periventricular regions, subarachnoid spaces and leptomeninges.

1977 Lancet 9 July 90/1 Foci of round-cell infiltration were found in the leptomeninges and in the wall of small vessels intracerebrally.

1985 C. R. Leeson et al. Textbk. Histol. (ed. 5) vii. 228/2 Pia and arachnoid have a similar structure and sometimes are regarded as a single layer called the leptomeninx or leptomeninges.

This entry has not yet been fully updated (first published 1902; most recently modified version published online June 2022).

单词	lepto-
释义	lepto-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. combining form of Greek λεπτός fine, small, thin, delicate, used in many terms of Zoology and Botany. Categories » leptocardian adj. and n. Brit. /ˌlɛptə(ʊ)ˈkɑːdɪən/ , U.S. /ˌlɛptoʊˈkɑrdiən/ , /ˌlɛptəˈkɑrdiən/ [Greek καρδία heart] Zoology (a) adj. belonging to the Leptocardii, the lowest group of true vertebrates, having contractile pulsating sinuses instead of a heart; (b) n. a vertebrate belonging to this group ( Cent. Dict. 1889). leptocephalan n. Brit. /ˌlɛptə(ʊ)ˈsɛf(ə)lən/ , /ˌlɛptə(ʊ)ˈsɛfl̩ən/ , /ˌlɛptə(ʊ)ˈkɛf(ə)lən/ , /ˌlɛptə(ʊ)ˈkɛfl̩ən/ , U.S. /ˌlɛptoʊˈsɛfələn/ ΘΚΠ the world > animals > fish > class Osteichthyes or Teleostomi > subclass Actinopterygii > subdivision Teleostei > [noun] > order Anguilliformes > family Leptocephalidae > member of leptocephalus1769 glass-eel1840 leptocephalan1842 leptocephalid1882 1842 W. T. Brande Dict. Sci., Lit. & Art 655/1 Leptocephalans, Leptocephalidæ, the name of a family of fishes characterized by the smallness of the head, of which the genus Leptocephalus is the type. leptocephalid n. Brit. /ˌlɛptə(ʊ)ˈsɛf(ə)lɪd/ , /ˌlɛptə(ʊ)ˈkɛf(ə)lɪd/ , U.S. /ˌlɛptoʊˈsɛfəlɪd/ [Greek κεϕαλή head] Ichthyology a fish of the family Leptocephalidæ. ΘΚΠ the world > animals > fish > class Osteichthyes or Teleostomi > subclass Actinopterygii > subdivision Teleostei > [noun] > order Anguilliformes > family Leptocephalidae > member of leptocephalus1769 glass-eel1840 leptocephalan1842 leptocephalid1882 1882 Q. Rev. Jan. 251 These Leptocephalids are small, narrow, elongate. leptocephalic adj. Brit. /ˌlɛptə(ʊ)sᵻˈfalɪk/ , /ˌlɛptə(ʊ)kɛˈfalɪk/ , U.S. /ˌlɛptoʊsəˈfælɪk/ having a narrow skull; exhibiting leptocephaly; Ichthyology, as the designation of certain flatfish (cf. leptocephalid n.). ΘΚΠ the world > life > the body > structural parts > bone or bones > skull > skull measurement > [adjective] > types short-headed1802 beloid1833 microcephalous1840 platycephalous1846 long-skulled1847 round-headed1847 brachycephalic1849 dolichocephalic1849 acrocephalic1855 megacephalous1857 microcephalic1857 cymbocephalic1861 macrocephalous1861 platycephalic1861 macrocephalic1863 phaenozygous1863 dolichocephalous1864 homoeocephalic1866 mecistocephalic1866 mecocephalic1866 mesocephalic1866 orthocephalic1866 stenocephalic1866 cryptozygous1867 megalocephalic1868 aphanozygous1871 brachycephalous1872 orthocephalous1872 mesaticephalic1873 plagiocephalic1873 plagiocephalic1874 mesaticephalous1876 mesorrhine1877 platyrrhine1877 cylindro-cephalic1878 eurycephalic1878 hypsistenocephalic1878 megaseme1878 mesoseme1878 microseme1878 oxycephalic1878 oxyklinocephalic1878 platybasic1878 pyrgocephalic1878 tapinocephalic1878 megacephalic1879 hypsiconchous1885 mesoconchous1885 chamaeprosopic1886 leptocephalic1886 mesorrhinian1887 long-headed1888 tectocephalic1888 mecistocephalous1890 megalocephalous1890 plagiocephalous1890 mesocephal1891 stegoid1894 brachycranial1902 chamaecephalic1902 chamaeconchic1902 chamaecranial1902 macrocranial1902 platycranial1902 stenocranial1904 mesoconch1905 mesoconchic1909 hypsiconch1920 Lapponoid1939 hypsiconchic1960 1886 Pop. Sci. Monthly May 114 Many young flat-fish..assume that peculiarly elongated and strange form known as leptocephalic. leptocephaly n. Brit. /ˌlɛptə(ʊ)ˈsɛfəli/ , /ˌlɛptə(ʊ)ˈsɛfl̩i/ , /ˌlɛptə(ʊ)ˈkɛfəli/ , /ˌlɛptə(ʊ)ˈkɛfl̩i/ , U.S. /ˌlɛptoʊˈsɛfəli/ narrowness of skull. ΘΚΠ the world > life > the body > structural parts > bone or bones > skull > skull measurement > [noun] > types of skull > condition of having long-headedness1818 microcephalia1849 microcephaly1863 leptocephaly1864 platycephaly1864 dolichocephalism1865 mesaticephalism1865 brachistocephaly1866 dolichocephaly1866 mecistocephaly1866 acrocephaly1870 brachycephaly1871 megalocephaly1878 pyrgocephaly1878 stenocephaly1878 brachycephalism1880 platyrrhiny1880 hypsistenocephaly1881 mesocephaly1883 short-headedness1883 orthocephaly1884 oxycephaly1885 mesocephalism1888 macrocephalia1889 macrocephaly1889 broad-headedness1890 mesaticephaly1891 chamaeconchy1902 chamaeprosopy1902 hypsiconchy1902 mesorrhiny1902 mesoconchy1904 tower skull1905 1864 J. Hunt tr. C. Vogt Lect. on Man ii. 30 Platycephaly stands opposed to leptocephaly, though connected with it by gradual transitions. leptodactyl adj. and n. Brit. /ˌlɛptəˈdakt(ᵻ)l/ , U.S. /ˌlɛptəˈdækt(ə)l/ [Greek δάκτυλος toe] Ornithology (a) adj. having thin or slender toes; (b) n. a bird with slender toes. ΚΠ a1864 Hitchcock (cited in Worcester) Leptodactyl..Leptodactylous. leptodactylous adj. Brit. /ˌlɛptə(ʊ)ˈdaktᵻləs/ , /ˌlɛptə(ʊ)ˈdaktl̩əs/ , U.S. /ˌlɛptəˈdæktələs/ , /ˌlɛptoʊˈdæktələs/ [-ous suffix] = leptodactyl adj. and n. Π 1855 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Leptodactylus, leptodactylous. Categories » leptodermous adj. Brit. /ˌlɛptə(ʊ)ˈdəːməs/ , U.S. /ˌlɛptəˈdərməs/ , /ˌlɛptoʊˈdərməs/ [Greek δέρμα skin] Botany having thin skin, said of moss-capsules when pliable ( New Sydenham Soc. Lexicon 1888). Categories » leptoglossal adj. Brit. /ˌlɛptə(ʊ)ˈɡlɒsl/ , U.S. /ˌlɛptəˈɡlɔs(ə)l/ , /ˌlɛptəˈɡlɑs(ə)l/ , /ˌlɛptoʊˈɡlɔs(ə)l/ , /ˌlɛptoʊˈɡlɑs(ə)l/ [Greek γλῶσσα tongue] Zoology of or pertaining to the division Leptoglossa of lizards, having slender tongues ( Cent. Dict.). leptoglossate adj. and n. Brit. /ˌlɛptə(ʊ)ˈɡlɒsət/ , /ˌlɛptə(ʊ)ˈɡlɒseɪt/ , U.S. /ˌlɛptəˈɡlɔsət/ , /ˌlɛptəˈɡlɑsət/ , /ˌlɛptoʊˈɡlɔˌseɪt/ , /ˌlɛptoʊˈɡlɑˌseɪt/ (a) adj. leptoglossal; (b) n. a lizard of this group ( Cent. Dict.). leptomeningitis n. Brit. /ˌlɛptə(ʊ)mɛnᵻnˈdʒʌɪtᵻs/ , U.S. /ˌlɛptoʊˌmɛnənˈdʒaɪdᵻs/ Pathology inflammation of the pia mater and the arachnoid (the leptomeninges). ΚΠ 1881 A. Flint Treat. Princ. Med. (ed. 5) 693 Sometimes inflammation of the pia mater is denominated leptomeningitis, in distinction from pachymeningitis which is inflammation of the dura mater. leptophloem n. Brit. /ˌlɛptə(ʊ)ˈfləʊɛm/ , U.S. /ˌlɛptoʊˈfloʊˌɛm/ [see phloem n.] Botany in certain mosses (see quot.). ΚΠ 1889 A. W. Bennett & G. R. M. Murray Handbk. Cryptogamic Bot. 146 A leptophloem or rudimentary phloem, in which the storing up and conduction of the food-material takes place. Categories » leptophyllous adj. Brit. /ˌlɛptə(ʊ)ˈfɪləs/ , U.S. /ˌlɛptəˈfɪləs/ , /ˌlɛptoʊˈfɪləs/ [Greek ϕύλλον leaf] Botany slender-leaved (Mayne Expos. Lexicon Med. Sci. 1855). leptoprosope n. Brit. /ˌlɛptə(ʊ)ˈprɒsəʊp/ , U.S. /ˌlɛptoʊˈprɔˌsoʊp/ , /ˌlɛptoʊˈprɑˌsoʊp/ [Greek πρόσωπον face] narrowness of face; the condition of having a long narrow-faced skull ( Cent. Dict.). leptoprosopic adj. Brit. /ˌlɛptə(ʊ)prəˈsəʊpɪk/ , U.S. /ˌlɛptoʊprəˈsoʊpɪk/ , /ˌlɛptoʊprəˈsɑpɪk/ having a long narrow face. Π 1889 Garson in Jrnl. Anthropol. Inst. 18 23 The midfacial index..in the three Yasinese skulls..is very constant and averages 54·2, making them dolichofacial, or leptoprosopic. leptorrhine adj. Brit. /ˈlɛptə(ʊ)rɪn/ , /ˈlɛptə(ʊ)rʌɪn/ , U.S. /ˈlɛptəˌraɪn/ , /ˈlɛptərən/ [ < Greek ῥῑν-, ῥίς nose] having a long narrow nose; having a nasal index of 47 or under. ΘΚΠ the world > life > the body > external parts of body > head > face > nose > [adjective] > types of nose > having cammed?c1350 camoised1393 nosed?1440 hook-nosed1519 snat-nosed1519 flat-nosed1530 bottle-nosed1566 chamoy-nosed1598 saddle-nosed1598 swine-snouted1600 camois-nosed1601 round-nosed1611 nosy1620 flat-nose1636 simous1656 sharp-nosed1675 tutty-nosed1681 Roman-nosed1688 snut-nosed1706 snub-nosed1725 camois1745 blunt-nosed1772 pug-nosed1788 snipy1825 button-nosed1830 nip-nosed1831 leptorrhinian1878 leptorrhine1880 snub1883 knob-nosed1886 long-nose1896 Tartar-nosed1897 Ally Sloper1901 beaky-nosed1923 1880 W. B. Dawkins Early Man in Brit. vii. 192 The leptorhine rhinocerous. 1884 J. E. Lee tr. Römer Bone Caves of Ojcow 31 In both the Wierzchow skulls the nose is leptorrhine. leptorrhinian adj. Brit. /ˌlɛptə(ʊ)ˈrɪnɪən/ , /ˌlɛptə(ʊ)ˈrʌɪnɪən/ , U.S. /ˌlɛptəˈrɪniən/ , /ˌlɛptəˈraɪniən/ ΘΚΠ the world > life > the body > external parts of body > head > face > nose > [adjective] > types of nose > having cammed?c1350 camoised1393 nosed?1440 hook-nosed1519 snat-nosed1519 flat-nosed1530 bottle-nosed1566 chamoy-nosed1598 saddle-nosed1598 swine-snouted1600 camois-nosed1601 round-nosed1611 nosy1620 flat-nose1636 simous1656 sharp-nosed1675 tutty-nosed1681 Roman-nosed1688 snut-nosed1706 snub-nosed1725 camois1745 blunt-nosed1772 pug-nosed1788 snipy1825 button-nosed1830 nip-nosed1831 leptorrhinian1878 leptorrhine1880 snub1883 knob-nosed1886 long-nose1896 Tartar-nosed1897 Ally Sloper1901 beaky-nosed1923 1878 R. T. H. Bartley tr. P. Topinard Anthropol. ii. ii. 257 The leptorrhinians, with the nasal skeleton elongated. 1891 Athenæum 25 July 132/3 Dr. Topinard communicates documents on the nasal index of the living... 49½ per cent...were leptorhinian..and 43 per cent. mesorhinian. leptorrhinic adj. Brit. /ˌlɛptə(ʊ)ˈrʌɪnɪk/ , U.S. /ˌlɛptəˈraɪnɪk/ , /ˌlɛptoʊˈraɪnɪk/ leptosperm n. Brit. /ˈlɛptə(ʊ)spəːm/ , U.S. /ˈlɛptəˌspərm/ [Greek σπέρμα seed] a plant of the genus Leptospermum of myrtaceous shrubs ( Cent. Dict.). leptosporangiate adj. Brit. /ˌlɛptə(ʊ)spəˈran(d)ʒɪət/ , U.S. /ˌlɛptoʊspəˈrændʒ(i)ət/ [see sporangium n.] Botany having sporangia which are developed from a single epidermic cell. ΚΠ 1887 H. E. F. Garnsey tr. K. Goebel Outl. Classif. Plants 193 Two divisions of the Filicineae, the Leptosporangiate and the Eusporangiate. leptothrix n. Brit. /ˈlɛptə(ʊ)θrɪks/ , U.S. /ˈlɛptəˌθrɪks/ [Greek θρίξ hair] ‘a fungus belonging to the Order Schizomycetes, consisting of very thin and long, indistinctly segmented, straight threads’ ( New Sydenham Soc. Lexicon); also attributive. ΘΚΠ the world > life > biology > organism > micro-organism > bacterium > [noun] > types of vibrio1850 micrococcus1870 microzyme1870 Spirillum1875 mycothrix1876 leptothrix1877 Spirochaete1877 streptococcus1877 Actinomyces1879 frogspawn1880 schizophyte1880 schizomycetes1881 gonococcus1882 saprophile1882 vibrion1882 coccus1883 diplococcus1883 streptobacteria1883 Clostridium1884 actinomycetes1885 pneumococcus1885 macrococcus1887 staphylococcus1887 iron bacterium1888 Proteus1888 ferrobacterium1890 meningococcus1890 rhizobium1890 sulphobacteria1890 nitrobacterium1891 Streptothrix1891 sulphur bacterium1891 myxobacter1892 Myxococcus1892 tetracoccus1893 coli1894 Pasteurella1895 pyrotoxin1895 Gaertner1897 purple bacterium1897 myxobacterium1898 pseudomonas1899 thiobacteria1900 treponema1908 corynebacterium1909 mycobacterium1909 Salmonella1913 Neisseria1915 botulinum1916 rickettsia1916 leptospira1918 acetobacter1920 Brucella1920 pseudomonad1921 strep1927 enterobacterium1929 opportunist1937 eubacterium1939 agrobacterium1942 persister1944 Moraxella1948 enteric1956 streptomycete1956 leptospire1957 transformant1957 lysogen1958 listeria1961 C. difficile1962 yersinia1967 Campylobacter1971 cyanobacterium1973 coryneform1976 eubacterium1977 legionella1979 acetogen1982 C. diff.1990 acidophilous1996 1877 A. W. Bennett tr. O. W. Thomé Text-bk. Struct. & Physiol. Bot. vi. 259 The forms known as Termo, Bacterium, Vibrio, Spirillum, Leptothrix, &c. 1882 Pop. Sci. Monthly Mar. 718 Bacteria attached end to end in a string form filaments of leptothrix. 1885 E. Klein Micro-org. 89 Long leptothrix filaments composed of short joints. 1897 T. C. Allbutt et al. Syst. Med. IV. 743 The leptothrix fungus and spores are almost invariably present in the concretions of tartar that gather round the teeth. leptoxylem n. Brit. /ˌlɛptə(ʊ)ˈzʌɪləm/ , U.S. /ˌlɛptoʊˈzaɪləm/ , /ˌlɛptəˈzaɪləm/ [xylem n.] Botany a structure in certain mosses (see quot.). ΚΠ 1889 A. W. Bennett & G. R. M. Murray Handbk. Cryptogamic Bot. 146 A leptoxylem or rudimentary xylem which serves for the conduction of the transpiration-current to the lower portion of the sporange furnished with stomates. Draft additions 1997 leptomeninx n. Brit. /ˌlɛptə(ʊ)ˈmiːnɪŋks/ , /ˌlɛptə(ʊ)ˈmɛnɪŋks/ , U.S. /ˌlɛptoʊˈminɪŋ(k)s/ , /ˌlɛptoʊˈmɛnɪŋ(k)s/ (pl. leptomeninges Brit. /ˌlɛptə(ʊ)mᵻˈnɪn(d)ʒiːz/ , U.S. /ˌlɛptoʊməˈnɪn(d)ʒiz/ ) [meninx n.] Anatomy the arachnoid and pia mater considered together; usually in plural in same sense. ΘΚΠ the world > life > the body > nervous system > cerebrospinal axis > [noun] > membranes > considered with the arachnoid leptomeninx1889 1889 Cent. Dict. Leptomeninges. 1893 I. K. Funk et al. Standard Dict. Eng. Lang. I Leptomeninx. 1899 T. C. Allbutt et al. Syst. Med. VII. 712 The leptomeninges stripping, on the contrary, with undue ease. 1934 R. R. Grinker Neurology iii. 62 Recent experiments have been interpreted to suggest that the primitive leptomeninx is of ectodermal origin. 1934 R. R. Grinker Neurology iii. 62 The external layer of the leptomeninx lies underneath the dura mater. 1959 Roizin & Kolb in Kies & Alvord ‘Allergic’ Encephalomyelitis i. 6 The lesions..were generally irregular in form and size, involving the gray and white matter of the cerebral cortex, and extending into the surrounding areas, including the periventricular regions, subarachnoid spaces and leptomeninges. 1977 Lancet 9 July 90/1 Foci of round-cell infiltration were found in the leptomeninges and in the wall of small vessels intracerebrally. 1985 C. R. Leeson et al. Textbk. Histol. (ed. 5) vii. 228/2 Pia and arachnoid have a similar structure and sometimes are regarded as a single layer called the leptomeninx or leptomeninges. This entry has not yet been fully updated (first published 1902; most recently modified version published online June 2022). < comb. form1842
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