IPA: /həˈluːsɪnətəri/
KK: /həˈluːsɪnətəri/
Relating to or causing the experience of seeing or hearing things that are not really there.
The medication had hallucinatory effects, making him see strange visions.
Hallucinatory → It is formed from "hallucination" (from Latin *hallucinatio*, meaning a wandering of the mind) and the suffix "-ory" (meaning relating to or characterized by). The word "hallucinatory" describes something that is related to or characterized by hallucinations, or experiences that are perceived but not real.
Think of 'hallucination' as a wandering of the mind, and remember that 'hallucinatory' refers to experiences that are related to these mind wanderings.