- to find out definitely; learn with certainty or assurance; determine: to ascertain the facts.
- Archaic. to make certain, clear, or definitely known.
Origin of ascertain
Examples from the Web for ascertains
Man forms the idea of an ellipse, and ascertains the laws of ellipses.Christianity As A Mystical Fact
For one's own dear self, one ascertains and remembers everything.The Letters of Jane Austen
Rigoletto has no immediate need of him, but ascertains where he can be found.The Complete Opera Book
He first ascertains what is according to the rule, and then follows it as nearly as he is able.
He ascertains 331 what will please her, and that is what he administers.
- to determine or discover definitely
- archaic to make certain
Word Origin and History for ascertains
early 15c., "to inform, to give assurance," from Anglo-French acerteiner, Old French acertener "to assure, certify" (13c.), from a "to" (see ad-) + certain "certain" (see certain). Modern meaning of "find out for sure by experiment or investigation" is first attested 1794. Related: Ascertained; ascertaining.