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."

updated on September 30, 2013

Definitions of significant from WordNet

significant (adj.)
rich in significance or implication;
a significant silence
Synonyms: meaning / pregnant
significant (adj.)
important in effect or meaning;
a significant contribution
statistically significant
a significant change in tax laws
a significant change in the Constitution
significant details
Synonyms: important
significant (adj.)
of considerable importance, size, or worth;
Synonyms: substantial
significant (adj.)
too closely correlated to be attributed to chance and therefore indicating a systematic relation;
no significant difference was found
the interaction effect is significant at the .01 level
Etymologies are not definitions. From, not affiliated with etymonline.