A combining form meaning "false, erroneous, pretended, unreal," used in the formation of
compound words (pseudonym, pseudoclassic, pseudointellectual).
In scientific use, denoting close or deceptive resemblance to the following
element (pseudogene, pseudobulb, pseudocarp).
From Gk. pseudo-, combining form of pseudes "false," or pseudos "falsehood," both from pseudein "to lie, cheat, falsify."
Doruž-, from Mid.Pers. druž "false, untrue, deceptive" (Mod.Pers. doruq "lie"), drôzitan, druxtan "to lie;" O.Pers. drauga- "lie;" Av. drug- "to lie," družaiti "he lies, cheats;" cf. Skt. druhyati "he lies," drôha-, drôgha- "insult, injury," druh- "damage; ghost;" O.H.G. triogan "to deceive;" Ger. trügen "to deceive;" E. dream; PIE base *dhrugh- "to deceive, harm."
Fr.: espace pseudo-euclidien
A real vector space of dimension n having a symmetric bilinear form (x, y) such that in some basis e1, ..., en, the quadratic form (x2) takes the form x12 + ... + xn - 12 - xn2. Such bases are called orthonormal.
Same → false nucleus.
Fr.: espace pseudo-riemannien
A space with an affine connection (without torsion), at each point of which the tangent space is a → pseudo-Euclidean space (Encyclopedia of Mathematics, Kluwer Academic Publications, Editor in chief I. M. Vinogradov, 1991).