trihedron
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TRIHEDRON
n.[Gr. three, and side. ] A figure having three equal sides.
Tri *he "dron, n. Etym: [Pref. tri- + Gr. (Geom.)
tri he dron |trīˈhēdrən traɪˈhidrən | ▶noun ( pl. trihedrons or trihedra |-drə | ) a solid figure having three sides or faces (in addition to the base or ends ). ORIGIN early 19th cent.: from tri- ‘three ’ + -hedron, on the pattern of words such as polyhedron .
trihedron |trʌɪˈhiːdrən, -ˈhɛdrən | ▶noun ( pl. trihedra |-drə | or trihedrons ) a solid figure having three sides or faces (in addition to the base or ends ). ORIGIN early 19th cent.: from tri- ‘three ’ + -hedron, on the pattern of words such as polyhedron .