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significant
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As an adjective, significant means signifying something. As a noun, it means that which has significance.
Meanings of significant
10 meaningsadjective
Signifying something; carrying meaning.
“a significant word or sound”
“a significant look”
Having a covert or hidden meaning.
Having a noticeable or major effect.
“That was a significant step in the right direction.”
“The First World War was a significant event.”
Reasonably large in number or amount.
statisticsHaving a low probability of occurring by chance (for example, having high correlation and thus likely to be related).
Important in effect or meaning
“a significant change in tax laws”
“a significant change in the Constitution”
“a significant contribution”
Similar: importantToo closely correlated to be attributed to chance and therefore indicating a systematic relation
“the interaction effect is significant at the .01 level”
“no significant difference was found”
noun
That which has significance; a sign; a token; a symbol.
Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).