Pronunciation: (strānj'nis),[key] —n. 1. the quality or condition of being strange.
2. Physics.a quantum number assigned the value -1 for one kind of quark, +1 for its antiquark, and 0 for all other quarks; the strangeness of a hadron is the sum of the values for the strangeness of its constituent quarks and antiquarks. Symbol: S Cf. strange quark.