ascertainer

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• Ascertainer — As cer*tain er, n. One who ascertains. [1913 Webster] …   The Collaborative International Dictionary of English

• 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… …   Universalium