Pronunciation change

  • (UK) IPA (key): /ɪf ən(d) ˈəʊn.lɪ ɪf/
  • (US) IPA (key): /ɪf ən(d) ˈoʊn.li ɪf/

Conjunction change

Conjunction
iff

  1. (mathematics) Iff is the short form of if and only if