| 单词 | ascertain |
| 释义 | ascertain —ascertainable, adj. —ascertainably, adv. —ascertainer, n. —ascertainment, n. /as'euhr tayn"/, v.t. 1. to find out definitely; learn with certainty or assurance; determine: to ascertain the facts. 2. Archaic. to make certain, clear, or definitely known. [1400-50; late ME, var. of ASSERTAIN, ACERTAIN < MF acertain- (tonic s. of acertener to make certain), equiv. to a- A-5 + certain CERTAIN] Syn. 1. See learn. |
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