not genuine, authentic, or true; not from the claimed, pretended, or proper source; counterfeit.
Biology. (of two or more parts, plants, etc.) having a similar appearance but a different structure.
of illegitimate birth; bastard.

1590–1600; < Latin spurius bastard, perhaps < Etruscan; see -ous

spuriously, adverb
spuriousness, noun
nonspurious, adjective
nonspuriously, adverb
nonspuriousness, noun
unspurious, adjective
unspuriously, adverb
unspuriousness, noun

1. false, sham, bogus, mock, feigned, phony; meretricious, deceitful.

1. genuine.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
spurious (ˈspjʊərɪəs)
1.  not genuine or real
2.  (of a plant part or organ) having the appearance of another part but differing from it in origin, development, or function; false: a spurious fruit
3.  (of radiation) produced at an undesired frequency by a transmitter, causing interference, etc
4.  rare illegitimate
[C17: from Latin spurius of illegitimate birth]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1598, "born out of wedlock," from L. spurius "illegitimate, false" (cf. It. spurio, Sp. espurio), from spurius (n.) "illegitimate child," probably from Etruscan spural "public." Sense of "having an irregular origin, not properly constituted" is from 1601; that of "false, sham" is from 1615.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

spurious spu·ri·ous (spyur'ē-əs)
Similar in appearance or symptoms but unrelated in morphology or pathology; false.

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