having a horn or horns or hornlike parts or horns of a particular kind; "horned viper"; "great horned owl"; "the unicorn--a mythical horned beast"; "long-horned cattle"
involving three parties or elements; "the triangular mother-father-child relationship"; "a trilateral agreement"; "a tripartite treaty"; "a tripartite division"; "a three-way playoff"
having three angles; forming or shaped like a triangle; "a triangular figure"; "a triangular pyrimid has a triangle for a base"