geniculumn.

Brit.

/dʒᵻˈnɪkjᵿləm/, U.S.

/dʒəˈnɪkjələm/

Inflections: Plural genicula, geniculums.

Forms:

α. 1700s– genicula (plural geniculae).

β. 1700s– geniculus (plural geniculi).

γ. 1700s geniculum.

Origin: A borrowing from Latin. Etymons: Latin geniculum; Latin geniculus; Latin genicula.

Etymology: Partly (i) < classical Latin geniculum knee, small knee, knot or joint in the stem of a plant < genū genu n. + -culum -culum suffix; partly (ii) < post-classical Latin geniculus (1542 or earlier in botanical use), alteration (with change of gender) of geniculum ; compare classical Latin geniculus bend in a pipe (Vitruvius); and partly (iii) < post-classical Latin genicula (1530 or earlier), alteration (with change of gender) of geniculum . Compare earlier genicle n.

Anatomy and Biology.

Originally: a node or joint (in the stem of a plant, the antenna of an arthropod, etc.). In later use also: a feature resembling a bent knee (in an animal, plant, shell, etc.); an angle in a structure (cf. genu n.), or a feature situated at such an angle.

ΘΚΠ

the world > life > biology > physical aspects or shapes > shape > [noun] > bend or fold

folda1250

plight1543

duplication1578

reduplication1578

sinus1615

plica1660

recess1666

duplicature1683

reduplicature1698

geniculum1701

genu1854

infraction1882

uncinate1891

1701 Philos. Trans. 1700–1 (Royal Soc.) 22 861 The Horns [of a beetle] about 3 inches long, composed of 10 thorny geniculæ.

1760 J. Lee Introd. Bot. iii. xxii. 222 Articulus, a Joint, is the Part of the Culmus that lies between two Geniculi or Knots.

1822 W. P. C. Barton Flora N. Amer. II. 101 Stem filiform, creeping, geniculate; geniculæ one-flowered.

1842 Phytologist 1 346 Zygodesmus. Flocci creeping, branched, entangled, septate or suddenly staple-bent so as to form a geniculus.., and afterwards paired by branches or geniculi developed at right angles.

1867 A. Hyatt in Bull. Mus. Compar. Zoöl. Harvard 1 72 No further changes have been made on the nomenclature generally employed [in the description of ammonites], with the exception of the use of the words ‘pilæ’ for ribs, and ‘geniculæ’ for the knees of the ribs.

1889 A. H. Buck Ref. Handbk. Med. Sci. VIII. 131/1 The thalami and geniculums project caudad beyond the intersegmental line.

1913 Gray's Anat. (ed. 18) 853 The point where it [sc. the facial nerve] changes its direction is named the geniculum; it presents a reddish gangliform swelling, the genicular ganglion.

1932 Trans. Amer. Entomol. Soc. 58 352 The caudal geniculae of the type of latipes are unusually stout and broad.

1989 Amer. Jrnl. Bot. 76 1497/1 A geniculus, typical of fagaceous pollen, is prominent.

1998 C. J. Dawes Marine Bot. (ed. 2) vi. 158 The articulated species [of coralline algae] have noncalcified genicula or joints between the calcified segments.

2000 A. Ivancic & V. Lebot Genetics & Breeding Taro 30 Leaves..on long, tough, stiff, blotched spiny petioles with prominent geniculi at their apices.

2010 C. Sainte-Rose et al. in J.-C. Tonn et al. Oncol. CNS Tumors (ed. 2) xxiv. 405/2 The medial and lateral geniculi are involved in the auditory and visual pathways, respectively.

This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022).

单词	geniculum
释义	geniculumn. Brit. /dʒᵻˈnɪkjᵿləm/, U.S. /dʒəˈnɪkjələm/ Inflections: Plural genicula, geniculums. Forms: α. 1700s– genicula (plural geniculae). β. 1700s– geniculus (plural geniculi). γ. 1700s geniculum. Origin: A borrowing from Latin. Etymons: Latin geniculum; Latin geniculus; Latin genicula. Etymology: Partly (i) < classical Latin geniculum knee, small knee, knot or joint in the stem of a plant < genū genu n. + -culum -culum suffix; partly (ii) < post-classical Latin geniculus (1542 or earlier in botanical use), alteration (with change of gender) of geniculum ; compare classical Latin geniculus bend in a pipe (Vitruvius); and partly (iii) < post-classical Latin genicula (1530 or earlier), alteration (with change of gender) of geniculum . Compare earlier genicle n. Anatomy and Biology. Originally: a node or joint (in the stem of a plant, the antenna of an arthropod, etc.). In later use also: a feature resembling a bent knee (in an animal, plant, shell, etc.); an angle in a structure (cf. genu n.), or a feature situated at such an angle. ΘΚΠ the world > life > biology > physical aspects or shapes > shape > [noun] > bend or fold folda1250 plight1543 duplication1578 reduplication1578 sinus1615 plica1660 recess1666 duplicature1683 reduplicature1698 geniculum1701 genu1854 infraction1882 uncinate1891 1701 Philos. Trans. 1700–1 (Royal Soc.) 22 861 The Horns [of a beetle] about 3 inches long, composed of 10 thorny geniculæ. 1760 J. Lee Introd. Bot. iii. xxii. 222 Articulus, a Joint, is the Part of the Culmus that lies between two Geniculi or Knots. 1822 W. P. C. Barton Flora N. Amer. II. 101 Stem filiform, creeping, geniculate; geniculæ one-flowered. 1842 Phytologist 1 346 Zygodesmus. Flocci creeping, branched, entangled, septate or suddenly staple-bent so as to form a geniculus.., and afterwards paired by branches or geniculi developed at right angles. 1867 A. Hyatt in Bull. Mus. Compar. Zoöl. Harvard 1 72 No further changes have been made on the nomenclature generally employed [in the description of ammonites], with the exception of the use of the words ‘pilæ’ for ribs, and ‘geniculæ’ for the knees of the ribs. 1889 A. H. Buck Ref. Handbk. Med. Sci. VIII. 131/1 The thalami and geniculums project caudad beyond the intersegmental line. 1913 Gray's Anat. (ed. 18) 853 The point where it [sc. the facial nerve] changes its direction is named the geniculum; it presents a reddish gangliform swelling, the genicular ganglion. 1932 Trans. Amer. Entomol. Soc. 58 352 The caudal geniculae of the type of latipes are unusually stout and broad. 1989 Amer. Jrnl. Bot. 76 1497/1 A geniculus, typical of fagaceous pollen, is prominent. 1998 C. J. Dawes Marine Bot. (ed. 2) vi. 158 The articulated species [of coralline algae] have noncalcified genicula or joints between the calcified segments. 2000 A. Ivancic & V. Lebot Genetics & Breeding Taro 30 Leaves..on long, tough, stiff, blotched spiny petioles with prominent geniculi at their apices. 2010 C. Sainte-Rose et al. in J.-C. Tonn et al. Oncol. CNS Tumors (ed. 2) xxiv. 405/2 The medial and lateral geniculi are involved in the auditory and visual pathways, respectively. This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022). < n.1701
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