1. a. Having or expressing a meaning: Are the markings on the stone significant?
b. Having or expressing a covert or nonverbal meaning; suggestive: a significant glance.
2. Having or likely to have a major effect; important: a significant change in the tax laws.
3. Fairly large in amount or quantity: significant casualties; no significant opposition.
4. Statistics Of or relating to observations or occurrences that are too closely correlated to be attributed to chance and therefore indicate a systematic relationship.
The left rock was significantly larger than the right rock.
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