The work of ascertaining a reducing to certainty a finding out-by examination finding
- The act of ascertaining; a reducing to certainty; a finding-out by investigation; finding.
(letter.) The act of ascertaining; a reducing to certainty; a finding out by research; development.
Southern sky left blank of stellar emblazonments was necessarily centred on the pole; and since the pole shifts among the stars through the effects of precession by a known annual amount, the ascertainment of any former place for it virtually fixes the epoch.