trilateral Meaning, Definition & Usage

  1. noun a three-sided polygon
    triangle; trigon.
  2. adjective satellite involving three parties
    • trilateral talks
  3. adjective satellite having three sides
    three-sided; triangular.
    • a trilateral figure

WordNet

Tri*lat"er*al adjective
Etymology
L. trilaterus; tri- (see Tri-) + latus, lateris, side: cf. F. trilatéral. See Lateral.
Definitions
  1. (Geom.) Having three sides; being three-sided; as, a trilateral triangle. -- Tri*lat"er*al*ly, adv. -- Tri*lat"er*al*ness, n.

Webster 1913