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Webster 1913 Edition

Trihedron

Tri-he′dron

,

Noun.

[Pref.

tri-

+ Gr. [GREEK] a seat, base.]

(Geom.)

A figure having three sides.

Webster 1828 Edition

Trihedron

TRIHE'DRON

,

Noun.

[Gr. three, and side.] A figure having three equal sides.