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nuclear emulsion

American  
[noo-klee-er i-muhl-shuhn, nyoo-] / ˈnu kli ər ɪˈmʌl ʃən, ˈnyu- /

noun

Physics.

  1. a photographic emulsion in the form of a thick block, used to record the tracks of elementary particles.

Pronunciation

See nuclear ( def. ).

Etymology

Origin of nuclear emulsion

First recorded in 1945–50

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.