the.com/hadron

means A subatomic particle built from quarks bound together by the strong force, the family that includes protons, neutrons, and their more exotic cousins.

from Coined in the 1960s from the Greek 'hadros,' meaning thick, bulky, or stout — chosen to contrast with 'leptons' (from Greek for small or light). Physicists wanted a name signaling 'heavy, strongly-interacting particle,' and the Greek root fit: hadrons feel the strong nuclear force and tend to be the heftier members of the particle zoo.