Pronunciation: (fas'it),[key] —n., v.,-et•ed, -et•ing or (esp. Brit.)-et•ted, -et•ting.
—n. 1. one of the small, polished plane surfaces of a cut gem.
2. a similar surface cut on a fragment of rock by the action of water, windblown sand, etc.
3. aspect; phase: They carefully examined every facet of the argument. 4. Archit.any of the faces of a column cut in a polygonal form.
5. Zool.one of the corneal lenses of a compound arthropod eye.
6. Anat.a small, smooth, flat area on a hard surface, esp. on a bone.
7. Dentistry.a small, highly burnished area, usually on the enamel surface of a tooth, produced by abrasion between opposing teeth in chewing.