Cyathophylloid, a. [NL. cyathophyllum, fr. Gr. ky`aqos a cup + fy`llon a leaf.].
Like, or pertaining to, the family Cyathophyllidæ. [1913 Webster]
Cyathophylloid, n.
A fossil coral of the family Cyathophyllidæ; sometimes extended to fossil corals of other related families belonging to the group Rugosa; -- also called cup corals. Thay are found in paleozoic rocks. [1913 Webster]