triquetraladj.

Brit.

/trʌɪˈkwɛtrəl/,

/trʌɪˈkwiːtrəl/, U.S.

/traɪˈkwitrəl/,

/traɪˈkwɛtrəl/

Etymology: < Latin triquetrus (see triquetrous adj.) + -al suffix¹.

= triquetrous adj. triquetral bone, (a) (in plural), small bones of irregular triangular form, sometimes found in the sutures of the skull; also called Wormian bones; (b) an approximately pyramidal bone of the wrist that articulates with the pisiform bone; = cuneiform adj. 1(a); also elliptical as triquetral.

ΘΚΠ

the world > life > biology > physical aspects or shapes > shape > [adjective] > triangular or three-sided

triquetral1646

trigonala1728

triquetrous1752

trigonate1815

obtrigonate1819

trigonous1821

trigonoidal1822

obtriangular1826

obtrigonal1856

the world > life > the body > structural parts > bone or bones > bones of arm or leg > bones of arm > [noun] > bones of forearm > bones of wrist

navicular?a1425

navicular bone?a1425

wrist-bone1552

carpus1686

scaphoid bone1741

pisiform bone1753

pisiform1808

trapezoid1828

trapezium1840

unciform1840

scaphoid1846

carpal1854

lunar1854

centrale1870

radiale1870

intermedium1878

lunar bone1887

capitate1889

triquetral bone1913

1646 W. Prynne Canterburies Doome 124 Plate for the Chappell... A triquetrall Censor.

1804 G. Shaw Gen. Zool. V. 420 Triquetral Trunk-fish.

1861 H. Hagen Synopsis Neuroptera N. Amer. 159 Abdomen triquetral.

1913 Cunningham's Text-bk. Anat. (ed. 4) 223 An exceptional case..in which the centres for the capitate and triquetral bones were already present [at birth].

1961 S. Zuckerman New Syst. Anat. i. iv. 84 The triquetral bone forms a conspicuous prominence distal to the head of the ulna on the medial border of the dorsum of the hand.

1980 Gray's Anat. (ed. 36) iii. 371/2 The palmar and dorsal surfaces of the carpal bones, apart from the triquetral and pisiform, are rough for the attachment of ligaments.

This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022).

单词	triquetral
释义	triquetraladj. Brit. /trʌɪˈkwɛtrəl/, /trʌɪˈkwiːtrəl/, U.S. /traɪˈkwitrəl/, /traɪˈkwɛtrəl/ Etymology: < Latin triquetrus (see triquetrous adj.) + -al suffix¹. = triquetrous adj. triquetral bone, (a) (in plural), small bones of irregular triangular form, sometimes found in the sutures of the skull; also called Wormian bones; (b) an approximately pyramidal bone of the wrist that articulates with the pisiform bone; = cuneiform adj. 1(a); also elliptical as triquetral. ΘΚΠ the world > life > biology > physical aspects or shapes > shape > [adjective] > triangular or three-sided triquetral1646 trigonala1728 triquetrous1752 trigonate1815 obtrigonate1819 trigonous1821 trigonoidal1822 obtriangular1826 obtrigonal1856 the world > life > the body > structural parts > bone or bones > bones of arm or leg > bones of arm > [noun] > bones of forearm > bones of wrist navicular?a1425 navicular bone?a1425 wrist-bone1552 carpus1686 scaphoid bone1741 pisiform bone1753 pisiform1808 trapezoid1828 trapezium1840 unciform1840 scaphoid1846 carpal1854 lunar1854 centrale1870 radiale1870 intermedium1878 lunar bone1887 capitate1889 triquetral bone1913 1646 W. Prynne Canterburies Doome 124 Plate for the Chappell... A triquetrall Censor. 1804 G. Shaw Gen. Zool. V. 420 Triquetral Trunk-fish. 1861 H. Hagen Synopsis Neuroptera N. Amer. 159 Abdomen triquetral. 1913 Cunningham's Text-bk. Anat. (ed. 4) 223 An exceptional case..in which the centres for the capitate and triquetral bones were already present [at birth]. 1961 S. Zuckerman New Syst. Anat. i. iv. 84 The triquetral bone forms a conspicuous prominence distal to the head of the ulna on the medial border of the dorsum of the hand. 1980 Gray's Anat. (ed. 36) iii. 371/2 The palmar and dorsal surfaces of the carpal bones, apart from the triquetral and pisiform, are rough for the attachment of ligaments. This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022). < adj.1646
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