Entry 1 sense Webster, 1913 Hypnotist /hĭp'-nət-ĭst/ · Hyp·no·tist · IPA /ˈhɪpnətɪst/ 01 n. A person who hypnotizes another, especially one who is professionally trained in the technique. 1. A person who hypnotizes another, especially one who is professionally trained in the technique.