IMAGINARY

imaginary. Imaginary, a. fancied only in the imagination

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Im‐ag″i‐na‐ry (?), a. [[L. imaginarius: cf. F. imaginaire.]] 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 or quantity (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, lines, surfaces, etc. (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. Syn. — Ideal; fanciful; chimerical; visionary; fancied; unreal; illusive.