as·cer·tain ( s  r-t n )tr.v. as·cer·tained, as·cer·tain·ing, as·cer·tains 1. To discover with certainty, as through examination or experimentation. See Synonyms at discover. 2. Archaic To make certain, definite, and precise. [Middle English acertainen, to inform, from Old French acertener, ascertain- : a-, to (from Latin ad-; see ad-) + certain, certain; see certain.] as cer·taina·ble adj.as cer·taina·ble·ness n.as cer·taina·bly adv.as cer·tainment n. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Adj. | 1. | ascertained - discovered or determined by scientific observation; "variation in the ascertained flux depends on a number of factors"; "the discovered behavior norms"; "discovered differences in achievement"; "no explanation for the observed phenomena" determined - having been learned or found or determined especially by investigation |
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