As`cer*tain" (#), v. t. [imp. & p. p. Ascertained (#); p. pr. & vb. n. Ascertaining.] [OF. acertener; a (L. ad) + certain. See Certain.]


To render (a person) certain; to cause to feel certain; to make confident; to assure; to apprise.


When the blessed Virgin was so ascertained. Jer. Taylor.

Muncer assured them that the design was approved of by Heaven, and that the Almighty had in a dream ascertained him of its effects. Robertson.


To make (a thing) certain to the mind; to free from obscurity, doubt, or change; to make sure of; to fix; to determine.


The divine law . . . ascertaineth the truth. Hooker.

The very deferring [of his execution] shall increase and ascertain the condemnation. Jer. Taylor.

The ministry, in order to ascertain a majority . . . persuaded the queen to create twelve new peers. Smollett.

The mildness and precision of their laws ascertained the rule and measure of taxation. Gibbon.


To find out or learn for a certainty, by trial, examination, or experiment; to get to know; as, to ascertain the weight of a commodity, or the purity of a metal.

He was there only for the purpose of ascertaining whether a descent on England was practicable. Macaulay.


© Webster 1913.

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