Particle (physics) on Wikipedia
 Particle (ecology) on Wikipedia
 Grammatical particle on Wikipedia


From Middle French particule, and its source, Latin particula (small part, particle), diminutive of pars (part, piece).



particle (plural particles)

  1. A very small piece of matter, a fragment; especially, the smallest possible part of something. [from 14th c.]
  2. (physics) Any of various physical objects making up the constituent parts of an atom; an elementary particle or subatomic particle. [from 19th c.]
    • 2011, Brian Cox & Jeff Forshaw, The Quantum Universe, Allen Lane 2011, p. 55:
      What, he asked himself, does quantum theory have to say about the familiar properties of particles such as position?
    • 2012 March-April, Jeremy Bernstein, “A Palette of Particles”, in American Scientist[1], volume 100, number 2, page 146:
      The physics of elementary particles in the 20th century was distinguished by the observation of particles whose existence had been predicted by theorists sometimes decades earlier.
  3. (linguistics) A word that has a particular grammatical function but does not obviously belong to any particular part of speech, such as the word to in English infinitives or O as a vocative particle.
    • 1965 June 4, Shigeyuki Kuroda, “Generative grammatical studies in the Japanese language”, in DSpace@MIT[2], retrieved 2014-02-24, page 38:
      In English there is no grammatical device to differentiate predicational judgments from nonpredicational descriptions. This distinction does cast a shadow on the grammatical sphere to some extent, but recognition of it must generally be made in semantic terms. It is maintained here that in Japanese, on the other hand, the distinction is grammatically realized through the use of the two particles wa and ga.
    • 1988, Andrew Radford, Transformational grammar: a first course, Cambridge, UK: Cambridge University Press, page 133:
      Traditional grammar typically recognises a number of further categories: for example, in his Reference Book of Terms in Traditional Grammar for Language Students, Simpson (1982) posits two additional word-level categories which he refers to as Particle, and Conjunction. Particles include the italicised words in (58) below:
      (a) He put his hat on
      (b) If you pull too hard, the handle will come off
      (c) He was leaning too far over the side, and fell out
      (d) He went up to see the manager
  4. (linguistics) A function word associated with another word or phrase to impart meaning.
  5. (linguistics) A part of speech which cannot be inflected: an adverb, preposition, conjunction or interjection.
    • 1844, E. A. Andrews: First Lessions in Latin; or Introduction to Andrews and Stoddard's Latin Grammar. (6th edition, Boston), p.91 (at
      322. The parts of speech which are neither declined nor conjugated, are called by the general name of particles. 323. They are adverbs, prepositions, conjunctions, and interjections.
    • 1894 (2008), B. L. Gildersleeve & G. Lodge: Gildersleeve's Latin Grammar (reprint of the 3rd edition by Dover, 2008), p.9. (at
      The Parts of Speech are the Noun (Substantive and Adjective), the Pronoun, the Verb, and the Particles (Adverb, Preposition, and Conjunction)[.]
  6. (Christianity) In the Roman Catholic church, a crumb of consecrated bread; also the smaller breads used in the communion of the laity.



particle physics

Derived termsEdit

Related termsEdit


The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout § Translations.