HADRON Meaning of HADRON in English [had.ron] n [ISV hadr- thick, heavy (fr. Gk. hadros thick) + [2]-on] (1962): any of the subatomic particles that are made up of quarks and are subject to the strong force -- ha.dron.ic adj Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012