D defs.my
Entry 1 sense Webster, 1913

Ascertainment

· As·cer·tain·ment · IPA /ˌæsɚˈteɪnmənt/
01 n. The act of ascertaining; a reducing to certainty; a finding out by investigation; discovery.
  1. 1.
    The act of ascertaining; a reducing to certainty; a finding out by investigation; discovery.
    “The positive ascertainment of its limits.” Burke.