molecule

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noun mol·e·cule \ˈmä-li-ˌkyül\

Definition of molecule

  1. 1 :  the smallest particle of a substance that retains all the properties (see property 1a) of the substance and is composed of one or more atoms (see atom 1a) <a molecule of water> <a molecule of oxygen>

  2. 2 :  a tiny bit :  particle <a molecule of political honesty — Time>

Examples of molecule in a sentence

  1. There is not a molecule of evidence to support these charges.

  2. <not a molecule of sense in that girl>

Origin and Etymology of molecule

French molécule, from New Latin molecula, diminutive of Latin moles mass


First Known Use: 1701

Other Chemical Engineering Terms


MOLECULE Defined for English Language Learners

molecule

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noun mol·e·cule \ˈmä-li-ˌkyül\

Definition of molecule for English Language Learners

  • : the smallest possible amount of a particular substance that has all the characteristics of that substance

  • : a very small amount of something


MOLECULE Defined for Kids

molecule

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noun mol·e·cule \ˈmä-li-ˌkyül\

Definition of molecule for Students

  1. :  the smallest portion of a substance having the properties of the substance <a molecule of water>


Medical Dictionary

molecule

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noun mol·e·cule \ˈmäl-i-ˌkyü(ə)l\

Medical Definition of molecule

  1. :  the smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms



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