The meaning of SIGNIFICANT is having meaning; especially : full of import : suggestive. How to use significant in a sentence.

(Definition of significant from the Cambridge Academic Content Dictionary © Cambridge University Press)

significant meaning, definition, what is significant: having an important effect or influence,...: Learn more.

significant, adj., adv., & n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

SIGNIFICANT definition: important and deserving of attention; of consequence. See examples of significant used in a sentence.

WordReference Random House Learner's Dictionary of American English © 2025 sig•nif•i•cant /sɪgˈnɪfɪkənt/ adj. important; of consequence: a significant event in world history. having a special, …

A significant number of customers complained about the service. He won a significant amount of money. There is a significant difference in prices between the two stores.

A significant fact, event, or thing is one that is important or shows something. Time would appear to be the significant factor in this whole drama. ...a very significant piece of legislation. I think it was …

Signifying something; conveying a meaning; having a purport; expressive; implying some character, and not merely denotative: as, a significant word or sound. Serving as a sign or indication; having a …

Use the adjective significant to describe something that is important. Your "significant other" means the person who's most important in your life. A significant result in a scientific study is a result large …