facet
Cross references: 1. phase fac.et or fac.et.ted \'fas-*t\ \'fas-*t-*d\ n [F facette, dim. of face] 1: a small plane surface (as on a cut gem) 2: ASPECT, PHASE 3: the external corneal surface of an ommatidium 4: a smooth flat circumscribed anatomical surface 5: a fillet between the flutes of a column - fac.et.ed aj