A perception in the absence of external stimulus that has qualities of real perception

A false notion or belief that is persistently held despite evidence to the contrary

एक गलत धारणा या विश्वास जिसे लगातार रखा जाता है, इसके विपरीत सबूत के बावजूद

English Usage: Her belief that she could fly was a hallucination caused by extreme fatigue.

Hindi Usage: उसका यह विश्वास कि वह उड़ सकती है, अत्यधिक थकावट के कारण पैदा हुई भ्रांति थी।