Definitions

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

  • adj. Of or relating to an organic compound, especially a fatty acid, containing one or more double or triple bonds between the carbon atoms.
  • adj. Capable of dissolving more of a solute at a given temperature.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Not saturated; capable of dissolving more of a solute at the same temperature.
  • adj. Of a compound containing atoms sharing more than one valence bond, especially of an organic compound having one or more double bonds or triple bonds between carbon atoms.
  • adj. Not chromatically pure; diluted.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Capable of absorbing or dissolving to a greater degree.
  • adj. Capable of taking up, or of uniting with, certain other elements or compounds, without the elimination of any side product. The term is applied most commonly to compounds with a double or triple bond between two carbon atoms (as in ethylene).

from The Century Dictionary and Cyclopedia

  • Not saturated.

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

  • adj. not saturated; capable of dissolving more of a substance at a given temperature
  • adj. used of a compound (especially of carbon) containing atoms sharing more than one valence bond
  • adj. (of color) not chromatically pure; diluted

Etymologies

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