Entry 2 senses Webster, 1913 Fixity /(-ĭ*ty̆)/ · Fix·i·ty · IPA /ˈfɪksɪti/ 01 n. Fixedness; as, fixity of tenure; also, that which is fixed. 1. Fixedness; as, fixity of tenure; also, that which is fixed. 2. Coherence of parts.