triangular

• POS: Adjective
• HYPHEN: tri=an=gu=lar

CIDE DICTIONARY

triangular, a. [L. triangularis: cf. F. triangulaire.].

•  Having three angles; having the form of a triangle.  [1913 Webster]
•  Oblong or elongated, and having three lateral angles; as, a triangular seed, leaf, or stem.  [1913 Webster]

Triangular compasses, compasses with three legs for taking off the angular points of a triangle, or any three points at the same time. -- Triangular crab (Zoöl.), any maioid crab; -- so called because the carapace is usually triangular. -- Triangular numbers (Math.), the series of numbers formed by the successive sums of the terms of an arithmetical progression, of which the first term and the common difference are 1. See Figurate numbers, under Figurate.

OXFORD DICTIONARY

triangular, adj.
1 triangle-shaped, three-cornered.
2 (of a contest or treaty etc.) between three persons or parties.
3 (of a pyramid) having a three-sided base.

Derivative

triangularity n. triangularly adv.

Etymology

LL triangularis (as TRIANGLE)

THESAURUS

triangular

cuneate, cuneated, cuneiform, deltoid, fan-shaped, oxygonal, three, three-cornered, three-dimensional, three-footed, three-in-one, three-pronged, three-sided, triadic, trial, triangulate, triarch, trichotomous, tricorn, tricornered, tricuspid, trident, tridental, trifid, triflorate, triflorous, trifurcate, trigonal, trigonoid, trigrammatic, trihedral, trilateral, trimerous, trinal, trine, triparted, tripartite, triple, triplex, tripodic, triquetral, triquetrous, trisected, triune

ROGET THESAURUS

triangular

Trisection

N trisection, tripartition, trichotomy, third, third part, trifid, trisected, tripartite, trichotomous, trisulcate, Triadelphous, triangular, tricuspid, tricapsular, tridental, tridentate, tridentiferous, trifoliate, trifurcate, trigonal, trigrammic, trigrammatic, tripetalous, tripodal, tripodic, triquetral, triquetrous.

Angularity

N angularity, angularness, aduncity, angle, cusp, bend, fold, notch, fork, bifurcation, elbow, knee, knuckle, ankle, groin, crotch, crutch, crane, fluke, scythe, sickle, zigzag, kimbo, akimbo, corner, nook, recess, niche, oriel, coign, right angle, obliquity, angle of 45 degrees, miter, acute angle, obtuse angle, salient angle, reentering angle, spherical angle, angular measurement, angular elevation, angular distance, angular velocity, trigonometry, goniometry, altimetry, clinometer, graphometer, goniometer, theodolite, sextant, quadrant, dichotomy, triangle, trigon, wedge, rectangle, square, lozenge, diamond, rhomb, rhombus, quadrangle, quadrilateral, parallelogram, quadrature, polygon, pentagon, hexagon, heptagon, octagon, oxygon, decagon, pyramid, cone, Platonic bodies, cube, rhomboid, tetrahedron, pentahedron, hexahedron, octahedron, dodecahedron, icosahedron, eicosahedron, prism, pyramid, parallelopiped, curb roof, gambrel roof, mansard roof, angular, bent, crooked, aduncous, uncinated, aquiline, jagged, serrated, falciform, falcated, furcated, forked, bifurcate, zigzag, furcular, hooked, dovetailed, knock kneed, crinkled, akimbo, kimbo, geniculated, oblique, fusiform, wedge-shaped, cuneiform, cuneate, multangular, oxygonal, triangular, trigonal, trilateral, quadrangular, quadrilateral, foursquare, rectangular, square, multilateral, polygonal, cubical, rhomboid, rhomboidal, pyramidal.