subatomic particle

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subatomic particle

[¦səb·ə′täm·ik ′pärd·ə·kəl]
(physics)
A particle which is smaller than an atom, namely, an elementary particle or an atomic nucleus.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
(In a defense of the mere coherence of hylomorphism, this is begging no questions since it is available to the hylomorphist to incorporate this into his theory.) So here we have a way of determining when some basic particles jointly coincide with a substance that is intrinsically one thing.
It's the biggest physics news of the 21st century, allowing scientists to explain why some of nature's basic particles have mass.
For a quarter century, many physicists have favored string theory, which describes the basic particles of matter and force as tiny vibrating strands or loops called superstrings, as the best route for unifying quantum physics with gravity.
Observations of cosmic rays and experiments with atom smashers, though, disclosed numerous other seemingly basic particles, with weird names like pion, lambda, delta and sigma, threatening to exhaust the Greek alphabet.
According to what physicists call the "standard model" of the universe, particles such as protons and neutrons are themselves made up of even more basic particles called quarks.

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