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atom

at·om

atom

 
pronunciation:
ae tm
features:
Word Combinations (noun), Word History, Word Explorer, Word Parts
part of speech: noun
definition 1: an invisible component of any element, consisting of protons, neutrons, and electrons, once considered the smallest possible unit of matter.
definition 2: anything extremely small; tiny bit.
similar words:
grain, modicum, molecule, particle
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Word History
Atom is from an ancient Greek word that means "not able to be cut or divided."
Word Explorer
See
  chemistry, physics
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