Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “particle”


noun [C]     /ˈpɑːtɪkl/
a very small piece of something: particles of dust Words meaning small pieces and amountsPhysics in general
a very small part of an atom , for example an electron or a proton Atoms, molecules and sub-atomic particles
(Definition of particle noun from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “particle” in other dictionaries

Word of the Day


to pour liquid slowly over something, especially in a thin line or in small drops

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More