photoproton

[ foh-toh-proh-ton ]
/ ˌfoʊ toʊˈproʊ tɒn /

noun Physics.

a proton emitted from a nucleus during photodisintegration.

Origin of photoproton

First recorded in 1930–35; photo- + proton
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019