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more about surfaces
## surfaces |

1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Imaginary \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 [root]-9, a + b [root]-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.

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