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### Meaning of TRIANGULAR

 Pronunciation: trI'anggyulur WordNet Dictionary Definition: [adj]  having three sides; "a trilateral figure" [adj]  involving three parties or elements; "the triangular mother-father-child relationship"; "a trilateral agreement"; "a tripartite treaty"; "a tripartite division"; "a three-way playoff" [adj]  having three angles; forming or shaped like a triangle; "a triangular figure"; "a triangular pyrimid has a triangle for a base" TRIANGULAR is a 10 letter word that starts with T. Synonyms: Webster's 1913 Dictionary Definition: ```\Tri*an"gu*lar\, a. [L. triangularis: cf. F. triangulaire.] 1. Having three angles; having the form of a triangle. 2. (Bot.) Oblong or elongated, and having three lateral angles; as, a triangular seed, leaf, or stem. {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} (Zo["o]l.), 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}. ```