Il-lū'sion, n.

noun

(il-lū'zhun), n. [Lat. illusio, from illudere, illusum, to illude; Fr. illusion, Pr. illusio, Sp. ilusion, It. illusione.] An unreal image presented to the bodily or mental vision; a deceptive appearance; a false show; mockery; hallucination. “To cheat the eye with blear illusions.” Milton. Ye soft illusions, dear deceits, arise! Pope. Syn.—Delusion; mockery; deception; chimera; fallacy; error. See DELUSION.