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ascertain

as·cer·tain [ àssər táyn ] (past and past participle as·cer·tained, present participle as·cer·tain·ing, 3rd person present singular as·cer·tains)

transitive and intransitive verb

Definition:

determine something: to find out something with certainty ( formal )

[Late 16th century. < Old French acertain-, stem of acertener< certain (see certain)]

as·cer·tain·a·ble adjective

as·cer·tain·a·bly adverb

as·cer·tain·ment noun

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