Of or relating to particles that are smaller than an atom. (adjective)
Having dimensions or participating in reactions characteristic of the constituents of the atom. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "subatomic" in a sentence
"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."
"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."
"To others, it is at the speed of ideas, flickering with neon hues that burn and flare out in subatomic beats."