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WordReference Random House Learner's Dictionary of American English © 2024as•cer•tain /ˌæsɚˈteɪn/USA pronunciation v. - to find out definitely;
get to know: [~ + object]We tried hard to ascertain all the facts in the case.[~ + (that) clause]We ascertained that she told the truth.
See -cert-. WordReference Random House Unabridged Dictionary of American English © 2024as•cer•tain (as′ər tān′),USA pronunciation v.t. - to find out definitely;
learn with certainty or assurance;
determine:to ascertain the facts. - [Archaic.]to make certain, clear, or definitely known.
- Middle French acertain- (tonic stem of acertener to make certain), equivalent. to a- a-5 + certain certain
- late Middle English, variant of assertain, acertain 1400–50
- 1.See corresponding entry in Unabridged See learn.
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