subnuclear particle

[ suhb-noo-klee-er, -nyoo- or, by metathesis, -kyuh-ler ]
/ sʌbˈnu kli ər, -ˈnyu- or, by metathesis, -kyə lər /

noun Physics.

any of the elementary particles, including those that do not exist in stable matter but appear as a result of high-energy collisions of other particles or nuclei.

Origin of subnuclear particle

First recorded in 1960–65; sub- + nuclear

pronunciation note for subnuclear particle

See nuclear. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019