Imaginary

a.	1.	Existing only in imagination or fancy; not real; fancied; visionary; ideal. Wilt thou add to all the griefs I suffer Imaginary ills and fancied tortures? - Addison. Imaginary calculus See under Calculus. Imaginary expression (Alg.) an algebraic expression which involves the impossible operation of taking the square root of a negative quantity; as, ?-9, a + b ?-1. Imaginary points (Geom.) points, lines, surfaces, etc., imagined to exist, although by reason of certain changes of a figure they have in fact ceased to have a real existence.
n.	1.	(Alg.) An imaginary expression or quantity.

Adj.

1.

imaginary - not based on fact; dubious; "the falsehood about some fanciful secret treaties"- F.D.Roosevelt; "a small child's imaginary friends"; "her imagined fame"; "to create a notional world for oneself" Synonyms: imagined, notional, fanciful

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