ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷mənt noun
( -s )
: the act of ascertaining:
a. archaic : a reducing to certainty : exact determination
that a period might be put and some ascertainment made and a time fixed — Oliver Cromwell
b. : a finding out (as by investigation) : discovery
his work … was the ascertainment of historical truth — Arnold Bennett