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View synonyms for

molecule

[ mol-uh-kyool ]

noun

  1. Chemistry, Physics. 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. Chemistry. 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.


molecule

/ ˈɒɪˌː /

noun

  1. the simplest unit of a chemical compound that can exist, consisting of two or more atoms held together by chemical bonds
  2. a very small particle
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

molecule

  1. 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.

molecule

  1. A combination of two or more atoms held together by a force between them. ( See covalent bond and ionic bond .)
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Other Word Forms

  • ܲ·DZ·ܱ noun
  • p·DZ·ܱ noun
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Word History and Origins

Origin of molecule1

First recorded in 1785–95; earlier molecula, from New Latin, from Latin ōŧ() “mass” ( molar 2( def ) ) + -cula -cule 1
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Word History and Origins

Origin of molecule1

C18: via French from New Latin ōŧܱ, diminutive of Latin ōŧ mass, mole 4
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Compare Meanings

How does molecule compare to similar and commonly confused words? Explore the most common comparisons:

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Example Sentences

Examples have not been reviewed.

Each molecule of glucose, she explained, surrounds itself with water molecules.

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A Cambridge team studying the atmosphere of a planet called K2-18b has detected signs of molecules which on Earth are only produced by simple organisms.

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These emission lines can split into several components in the presence of a magnetic field, caused by the interaction between the internal magnetic moments of the emitting atoms and molecules with the external magnetic field.

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It works in a new way, blocking the activity of a protein molecule called AKT which drives cancer growth.

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From there, they sneak past the protective barrier lining the respiratory system and head to the lymph nodes in search of cells that express a particular protein called signaling lymphocytic activation molecule, or SLAM.

From

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molecular weightmole drain