Word Study
triglyph
CIDE DICTIONARY
triglyph, n. [L. triglyphus, Gr. ; (see Tri-) + to carve: cf. F. triglyphe.].
An ornament in the frieze of the Doric order, repeated at equal intervals. Each triglyph consists of a rectangular tablet, slightly projecting, and divided nearly to the top by two parallel and perpendicular gutters, or channels, called glyphs, into three parts, or spaces, called femora. A half channel, or glyph, is also cut upon each of the perpendicular edges of the tablet. See Illust. of Entablature. [1913 Webster]
OXFORD DICTIONARY
triglyph, n. Archit. each of a series of tablets with three vertical grooves, alternating with metopes in a Doric frieze.
Derivative
triglyphic adj. triglyphical adj.
Etymology
L triglyphus f. Gk trigluphos (as TRI-, gluphe carving)
For further exploring for "triglyph" in Webster Dictionary Online