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a combining form meaning “false,” “pretended,” “unreal,” used in the formation of compound words (pseudoclassic; pseudointellectual): in scientific use, denoting close or deceptive resemblance to the following element (pseudobulb; pseudocarp), and used sometimes in chemical names of isomers (pseudoephedrine).
Also, especially before a vowel, pseud-.
< Greek, combining form of pseudḗs false, pseûdos falsehood
Can be confused
pseudo-, quasi-. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for pseudo-


combining form
false, pretending, or unauthentic pseudo-intellectual
having a close resemblance to pseudopodium
Word Origin
from Greek pseudēs false, from pseudein to lie
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for pseudo-
comb. form meaning "false, feigned, erroneous," from Gk. pseudo-, comb. form of pseudes "false," or pseudos "falsehood," both from pseudein "to deceive."
Online Etymology Dictionary, © 2010 Douglas Harper
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pseudo- in Medicine

pseudo- or pseud-

  1. False; deceptive; sham: pseudohematuria.

  2. Apparently similar: pseudomyxoma.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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