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molecules
2 dictionary results for: molecules
American Heritage Dictionary - Cite This Source - Share This
mol·e·cule       (mŏl'ĭ-kyōōl')  Pronunciation Key 
n.  
  1. The smallest particle of a substance that retains the chemical and physical properties of the substance and is composed of two or more atoms; a group of like or different atoms held together by chemical forces.
  2. A small particle; a tiny bit.


[French molécule, from New Latin mōlēcula, diminutive of Latin mōlēs, mass.]

The American Heritage Science Dictionary - Cite This Source - Share This
molecule       (mŏl'ĭ-kyl')  Pronunciation Key 
A group of two or more atoms linked together by sharing electrons in a chemical bond. Molecules are the fundamental components of chemical compounds and are the smallest part of a compound that can participate in a chemical reaction.

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