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significant

[sig-nif-i-kuh nt] /sɪgˈnɪf ɪ kənt/
adjective
1.
important; of consequence.
2.
having or expressing a meaning; indicative; suggestive:
a significant wink.
3.
Statistics. of or pertaining to observations that are unlikely to occur by chance and that therefore indicate a systematic cause.
noun
4.
something significant; a sign.
Origin
1570-1580
1570-80; < Latin significant- (stem of significāns), present participle of significāre to signify; see -ant
Related forms
significantly, adverb
nonsignificant, adjective
nonsignificantly, adverb
supersignificant, adjective
supersignificantly, adverb
unsignificant, adjective
unsignificantly, adverb
Synonyms
1. consequential, momentous, weighty. 2. See expressive.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for unsignificant

significant

/sɪɡˈnɪfɪkənt/
adjective
1.
having or expressing a meaning; indicative
2.
having a covert or implied meaning; suggestive
3.
important, notable, or momentous
4.
(statistics) of or relating to a difference between a result derived from a hypothesis and its observed value that is too large to be attributed to chance and that therefore tends to refute the hypothesis
Derived Forms
significantly, adverb
Word Origin
C16: from Latin significāre to signify
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 unsignificant

significant

adj.

1570s, "having a meaning," from Latin significantem (nominative significans, present participle of significare "make known, indicate" (see signify). Earlier in the same sense was significative (c.1400). Often "having a special or secret meaning," hence "important" (1761). Related: Significantly. Significant figure is from 1680s. Significant other (n.) attested by 1961, in psychology, "the most influential other person in the patient's world."

Online Etymology Dictionary, © 2010 Douglas Harper
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