1 noun equal importance, value, etccomhionannas masc1 c m uthere's no equivalence between the two qualificationsní hionann an dá cháilíocht, níl an dá cháilíocht comhionann2 noun COMP, MATH, SCIcoibhéis fem2 c m uthe equivalence of mass and energyan choibhéis maise is fuinnimh