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triangular |
3 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Triangular \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}. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Compasses \Com"pass*es\, n., pl An instrument for describing circles, measuring figures, etc., consisting of two or (rarely) more pointed branches, or legs, usually joined at the top by a rivet on which they move Note: The compasses for drawing circles have adjustable pen points, pencil points, etc.; those used for measuring without adjustable points are generally called dividers. See {Dividers}. {Bow compasses}. See {Bow-compass}. {Caliber compasses}, {Caliper compasses}. See {Calipers}. {Proportional}, {Triangular}, etc., {compasses}. See under {Proportional}, etc From WordNet r 1.6 [wn]: triangular adj 1: having three angles; forming or shaped like a triangle; "a triangular figure"; "a triangular pyrimid has a triangle for a base" 2: involving three parties or elements; "the triangular mother-father-child relationship"; "a trilateral agreement"; "a tripartite treaty"; "a tripartite division"; "a three-way playoff" [syn: {trilateral}, {tripartite}, {three-party}, {three-way}] 3: having three sides; "a trilateral figure" [syn: {trilateral}, {three-sided}]
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