triquetrousadj.
/trʌɪˈkwiːtrəs/, /trʌɪˈkwɛtrəs/, U.S. /traɪˈkwitrəs/, /traɪˈkwɛtrəs/ Three-sided triangular; in Natural History of triangular cross-section, three-edged, trihedral, triangularly prismatic or pyramidal.
ΘΚΠ
the world > space > shape > angularity > specific angular shape > [adjective] > triangular
three-corneredc1400
three-squaredc1400
three-squarec1450
triangle1474
triangled1486
triangular?1541
three-corner1548
trilater1570
trigonal1571
three-corned1584
three-sided1601
triangulated1610
triangulate1611
triform1621
triangulary1622
triquetrous1658
trilateral1660
triagonal1665
trigonic1788
cocked hat1846
heater-shaped1847
the world > relative properties > number > geometry > shape or figure > [adjective] > two-dimensional > triangular
triangle1474
triangled1486
triangular?1541
trigonal1570
trilater1570
triangulated1610
triangulate1611
triform1621
triangulary1622
triquetrous1658
trilateral1660
trilineal1715
trilinear1715
trigonic1788
trigonate1815
triagonal1831
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 > space > shape > angularity > specific angular shape > [adjective] > triangular > pyramidal or triangular in section
pyramidalc1450
trigonal1571
pyramidate1572
pyramidical1599
pyramidy1627
pyramical1633
triangular1644
pyramidated1745
triquetrous1752
trihedral angle1789
pyramoidal1883
1658 Sir T. Browne Garden of Cyrus ii, in Hydriotaphia: Urne-buriall 105 The lithostrata or figured pavements of the ancients, which consisted not all of square stones, but were divided into triquetrous segments.
1752 J. Hill Gen. Nat. Hist. III. 27 The grey wood Spider, with a triquetrous body.
1826 W. Kirby & W. Spence Introd. Entomol. III. xxxiii. 432 Almost universally they [the mandibles of insects] incline to a triquetrous or three-sided figure.
1870 J. D. Hooker Student's Flora Brit. Islands 291 Lamium, Dead-nettle..nutlets 3-quetrous.
1872 D. Oliver Lessons Elem. Bot. (new ed.) App. 309 Fruits ovoid, acutely triquetrous.
Derivatives
triˈquetrously adv.
ΚΠ
1884 in J. Stormonth Dict. Eng. Lang.
This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022).
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adj.1658