n.
Pronunciation: h ə - ˌ lü-s ə - ' n ā -sh ə n
Function: noun
Date: 1629
1 a : perception of objects with no reality usually arising from disorder of the nervous system or in response to drugs (as LSD) b : the object so perceived
2 : an unfounded or mistaken impression or notion : DELUSION
synonyms see DELUSION