trigonousadj.

/ˈtrɪɡənəs/

Etymology: < Greek τρίγωνος (see trigon n.) + -ous suffix.

Natural History.

= trigonal adj. 2.

ΘΚΠ

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

triquetral1646

trigonala1728

triquetrous1752

trigonate1815

obtrigonate1819

trigonous1821

trigonoidal1822

obtriangular1826

obtrigonal1856

1765 J. Lee Introd. Bot. (ed. 2) Gloss. 477 Trigonus caulis, a three-sided Stalk.]

1821 W. P. C. Barton Flora N. Amer. (new ed.) I. 114 Capsule truncate, trigonous.

1828 J. Stark Elements Nat. Hist. I. 259 Dendrocolaptes,..Bill depressed and trigonous at the base.

1870 J. D. Hooker Student's Flora Brit. Islands 245 Convolvulus arvensis..seeds 4, obtusely 3-gonous.

This entry has not yet been fully updated (first published 1914; most recently modified version published online December 2019).

单词	trigonous
释义	trigonousadj. /ˈtrɪɡənəs/ Etymology: < Greek τρίγωνος (see trigon n.) + -ous suffix. Natural History. = trigonal adj. 2. ΘΚΠ the world > life > biology > physical aspects or shapes > shape > [adjective] > triangular or three-sided triquetral1646 trigonala1728 triquetrous1752 trigonate1815 obtrigonate1819 trigonous1821 trigonoidal1822 obtriangular1826 obtrigonal1856 1765 J. Lee Introd. Bot. (ed. 2) Gloss. 477 Trigonus caulis, a three-sided Stalk.] 1821 W. P. C. Barton Flora N. Amer. (new ed.) I. 114 Capsule truncate, trigonous. 1828 J. Stark Elements Nat. Hist. I. 259 Dendrocolaptes,..Bill depressed and trigonous at the base. 1870 J. D. Hooker Student's Flora Brit. Islands 245 Convolvulus arvensis..seeds 4, obtusely 3-gonous. This entry has not yet been fully updated (first published 1914; most recently modified version published online December 2019). < adj.1821
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