from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. One of the flat polished surfaces cut on a gemstone or occurring naturally on a crystal.
  • n. Anatomy A small, smooth, flat surface, as on a bone or tooth.
  • n. Biology One of the lenslike visual units of a compound eye, as of an insect.
  • n. One of numerous aspects, as of a subject. See Synonyms at phase.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any one of the flat surfaces cut into a gem.
  • n. One among many similar or related, yet still distinct things.
  • n. One of a series of things, such as steps in a project.
  • n. One member of a compound eye, as found in insects and crustaceans.
  • n. A face of codimension 1 of a polytope.
  • v. To cut a facet into a gemstone.

from the GNU version of the Collaborative International Dictionary of English

  • n. A little face; a small, plane surface.
  • n. A smooth circumscribed surface.
  • n. The narrow plane surface between flutings of a column.
  • n. One of the numerous small eyes which make up the compound eyes of insects and crustaceans.
  • transitive v. To cut facets or small faces upon.

from The Century Dictionary and Cyclopedia

  • To cut a facet or facets upon: as, to facet a diamond.
  • n. A little face; a small surface; specifically, in lapidary work, a small polished surface, usually of some geometrical form; one of the many variously shaped segments or faces into which the surface of a gem is broken in order to increase its brilliancy.
  • n. In architecture the fillet between the flutings of a column.
  • n. In anatomy, a smooth, flat, circumscribed articular surface of bone. See second cut under dorsal.
  • n. In entomology, the surface of an ocellus of the compound eye of an insect; also, an ocellus.
  • n. A book; especially, a child's book of instruction; a primer.
  • n. In the embryo of Pentastomum, the circular thickening left on the detached integument at the site of the dorsal cone after the separation of the embryo from the integument. Also facette. Compare cervical cross.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a smooth surface (as of a bone or cut gemstone)
  • n. a distinct feature or element in a problem


from The American Heritage® Dictionary of the English Language, 4th Edition

French facette, from Old French, diminutive of face, face; see face.



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  • In castle architecture, "straight line of defensive walling."

    August 25, 2008

  • ...through a glass

    faceted like a hand-grenade,

    gurgling anecdotes deliciously

    with the sound of water when it leaves the bath...

    - Peter Reading, Mnemonic, from For the Municipality's Elderly, 1974

    June 22, 2008