Anything that looks like a a shape with three sides and three angles is triangular. If you see a triangular fin in the ocean while you’re swimming, watch out! Shark!

Start looking for triangular shapes and you'll begin to see them everywhere, from a triangular slice of pizza to a tortilla chip. Like triangle, triangular is rooted in the Latin tri-, "three," and angulus, "angle or corner." You'll also occasionally find this adjective describing things that involve three people, like a triangular relationship between three best friends.

Definitions of triangular
  1. adjective
    having three angles; forming or shaped like a triangle
    “a triangular figure”
    “a triangular pyrimid has a triangle for a base”
    angular, angulate
    having angles or an angular shape
  2. adjective
    having three sides
    synonyms: three-sided, trilateral
    many-sided, multilateral
    having many parts or sides
Word Family