The Collaborative International Dictionary
Triglyphic
Triglyphic \Tri*glyph"ic\, Triglyphical \Tri*glyph"ic*al\, a.
Consisting of, or pertaining to, triglyphs.
Containing three sets of characters or sculptures.
Wiktionary
triglyphic
a. 1 Consisting of, or relating to, triglyphs. 2 Containing three sets of characters or sculptures.