parity2Pronunciation: /ˈparɪti/Translate parity | into Italian | into Spanish Definition of parity noun [mass noun] Medicine the fact or condition of having borne children: the relationship between breast cancer and parity was investigated the number of children previously borne:very high parity (six children or more)Origin: late 19th century: from parous 'having borne offspring' (back-formation from adjectives ending in -parous) + -ityparity in other Oxford dictionaries Definition of parity in the US English dictionary