from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of or relating to particles that are smaller than an atom.
  • adj. Having dimensions or participating in reactions characteristic of the constituents of the atom.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Relating to particles that are constituents of the atom, or are smaller than an atom; such as proton, neutron, electron, etc.
  • adj. Relating to any length or mass that is smaller in scale than a the diameter of a hydrogen atom.

from The Century Dictionary and Cyclopedia

  • Of or pertaining to the relations of assumed particles or subdivisions of matter smaller than the atom: as, subatomic energy.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of smaller than atomic dimensions
  • adj. of or relating to constituents of the atom or forces within the atom


Sorry, no etymologies found.


  • The absurdity grows even more palpable among astrophysicists who avoid acknowledging the human-friendly pattern in subatomic and cosmic architecture found in the observable universe only by theorizing the existence of an infinite number of unobservable universes in which sovereign randomness has dictated other and more hostile architectures.

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  • His senses enable him to detect objects and energies light years away, and to perceive matter and energy in subatomic detail; he can even see through time, and with concentration can achieve limited perception of past and future events in his general vicinity.

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  • To others, it is at the speed of ideas, flickering with neon hues that burn and flare out in subatomic beats.

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  • Theoretical Physics who did specialize in subatomic particles,

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  • "for the discovery of the mechanism of spontaneous broken symmetry in subatomic physics" and the other half jointly to

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  • Amico said she was also inspired by the site Who Murdered Robert Wone, which was created by four Washington area men to offer "subatomic" coverage of the unsolved killing of Wone, a lawyer for Radio Free Asia who was killed under mysterious circumstances in the home of a college friend in 2006.

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