A Proton Is This Type of Heavy Subatomic Particle

This page is the CodyCross answer for the clue below from Tracking Time, Group 1041, Puzzle 3 (Daily Routine).

Question is: A Proton Is This Type of Heavy Subatomic Particle

and the answer is: BARYON

Word Meaning:

BARYON — (particle physics) A heavy subatomic particle created by the binding of quarks by gluons; a hadron containing three quarks. Baryons have half-odd integral spin and are thus fermions. This category includes the common proton and neutron of the atomic nucleus.

Definitions from Wiktionary.