subnuclear

adjective

pertaining to particles within or smaller than an atomic nucleus.

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

Examples from the Web for subnuclear

Historical Examples of subnuclear

Matter is made up of subnuclear particles—electrons, protons and the like.
The Untouchable
Stephen A. Kallis

British Dictionary definitions for subnuclear

subnuclear

adjective

of or relating to particles within the nucleus of an atom

of a lesser level of organization than the nucleus of an atom

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012