Emily Dickinson Lexicon

DE-LU'SION, n. [s as z; L. delusio. See Delude.]

1. The act of deluding; deception; a misleading of the mind. We are all liable to the delusions of artifice.
2. False representation; illusion; error or mistake proceeding from false views. And fondly mourn'd the dear delusion gone. – Prior.