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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 as·cer·tain /ˌæsɚ/
 (vt.)確定,探知

From: Webster's Revised Unabridged Dictionary (1913)

 As·cer·tain v. t. [imp. & p. p. Ascertained p. pr. & vb. n. Ascertaining.]
 1. To render (a person) certain; to cause to feel certain; to make confident; to assure; to apprise. [Obs.]
    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.
 2. To make (a thing) certain to the mind; to free from obscurity, doubt, or change; to make sure of; to fix; to determine. [Archaic]
    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.
 3. 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.
 

From: WordNet (r) 2.0

 ascertain
      v 1: after a calculation, investigation, experiment, survey, or
           study; "find the product of two numbers"; "The physicist
           who found the elusive particle won the Nobel Prize"
           [syn: determine, find, find out]
      2: be careful or certain to do something; make certain of
         something; "He verified that the valves were closed"; "See
         that the curtains are closed"; "control the quality of the
         product" [syn: see, check, insure, see to it, ensure,
          control, assure]
      3: find out, learn, or determine with certainty, usually by
         making an inquiry or other effort; "I want to see whether
         she speaks French"; "See whether it works"; "find out if
         he speaks Russian"; "Check whether the train leaves on
         time" [syn: determine, check, find out, see, watch,
          learn]
      4: learn or discover with certainty