noun par·ti·cle \ˈpär-ti-kəl\

: a very small piece of something

: a very small amount of something

physics : any one of the very small parts of matter (such as a molecule, atom, or electron)

Full Definition of PARTICLE

a :  a minute quantity or fragment
b :  a relatively small or the smallest discrete portion or amount of something
archaic :  a clause or article of a composition or document
:  any of the basic units of matter and energy (as a molecule, atom, proton, electron, or photon)
:  a unit of speech expressing some general aspect of meaning or some connective or limiting relation and including the articles, most prepositions and conjunctions, and some interjections and adverbs <the particle up has a perfective meaning in phrases such as beat up and cut up>
:  a small eucharistic wafer distributed to a Roman Catholic layman at Communion

Origin of PARTICLE

Middle English, from Latin particula, from diminutive of part-, pars
First Known Use: 14th century

Rhymes with PARTICLE

PARTICLE Defined for Kids


noun par·ti·cle \ˈpär-ti-kəl\

Definition of PARTICLE for Kids

:  a very small bit or amount of something <a particle of sand> <a particle of sense>

Word Root of PARTICLE

The Latin word pars, meaning part, and its form partis give us the root part. Words from the Latin pars have something to do with a part, section, or portion. To participate is to take part in some activity. Anything partial involves only part of something. A particle is a tiny bit or portion of something. It is easy to see that part itself also comes directly from pars in both form and meaning.
Medical Dictionary


noun par·ti·cle \ˈpärt-i-kəl\

Medical Definition of PARTICLE

:  one of the minute subdivisions of matter (as an atom or molecule); also :  elementary particle
:  a minute quantity or fragment
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