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Facet

1. A little face; a small, plane surface; as, the facets of a diamond.

alternative forms: facette.

2. (Science: anatomy) a smooth circumscribed surface; as, the articular facet of a bone.

3. The narrow plane surface between flutings of a column.

4. (Science: entomology, zoology) One of the numerous small eyes which make up the compound eyes of insects and crustaceans.

Origin: f. Facette, dim. Of face face. See face.