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.