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(physics) any of the smallest units that energy or matter consists of, such as electrons, atoms, molecules, etc.
(grammar) an adverb or preposition that is used with a verb to form a phrasal verb
What is a "particle"?
In linguistics, a particle is a small word that does not change form and is used to express a grammatical function rather than a specific meaning. Particles can help modify or clarify the role of other words in a sentence. In English, examples of particles include words like "to" in "to go" or "not" in "do not." Particles do not fit easily into other word categories like nouns, verbs, or adjectives, and they usually provide grammatical context, helping to form phrases, indicate negation, or show relationships between words.
a tiny, discrete unit of matter or substance that can range from subatomic particles like electrons and protons to larger particles like dust or sand grains
