trihedral

[ trahy-hee-druh l ]
/ traɪˈhi drəl /

adjective Geometry.

having, or formed by, three planes meeting in a point: a trihedral angle.

noun

a trihedron.

Origin of trihedral

First recorded in 1780–90; tri- + -hedral

OTHER WORDS FROM trihedral

sub·tri·he·dral, adjective

Example sentences from the Web for trihedral

British Dictionary definitions for trihedral

trihedral
/ (traɪˈhiːdrəl) /

adjective

having or formed by three plane faces meeting at a point

noun

a figure formed by the intersection of three lines in different planes

Word Origin for trihedral

C18: from tri- + Greek hedra base, seat + -al 1