The Collaborative International Dictionary of English v.0.48:
Peripteral \Pe*rip"ter*al\, a. [Gr., fr. ? + ? feather, wing, row of columns.] (Arch.) Having columns on all sides; -- said of an edifice. See Apteral. [1913 Webster]WordNet (r) 3.0 (2006):
peripteral adj 1: having columns on all sides [ant: apteral]