Entry 1 sense Webster, 1913 Magnification /măgˌ-nəf-ək-āsh'-ən/ · Mag·ni·fi·ca·tion · IPA /ˌmæɡnɪfɪˈkeɪʃən/ 01 n. The act of magnifying; enlargement; exaggeration. 1. The act of magnifying; enlargement; exaggeration.[R.]