triangular Meaning, Definition & Usage

  1. adjective satellite having three angles; forming or shaped like a triangle
    • a triangular figure
    • a triangular pyrimid has a triangle for a base
  2. adjective satellite having three sides
    trilateral; three-sided.
    • a trilateral figure

WordNet

Tri*an"gu*lar adjective
Etymology
L. triangularis: cf. F. triangulaire.
Definitions
  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.

Webster 1913