Meaning of molecule

mol•e•cule

Pronunciation: (mol'u-kyl"), [key]
— n.
  1. the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.
  2. a quantity of a substance, the weight of which, measured in any chosen unit, is numerically equal to the molecular weight; gram molecule.
  3. any very small particle.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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