zero derivation UK /ˌzɪəɹəʊ ˈdɛɹɪˌveɪʃən/US /ˌziɹəʊ ˈdɛɹɪˌveɪʃən/ noun1 •The derivation of a word from another word (of a differing part of speech) without modification. formszero derivations · zero-derivations
