Simple past tense and past participle of ascertain.
Ascertained Sentence Examples
He ascertained that it had no outlet.
It has been ascertained from recent explorations that the area of carboniferous formation in that state extends from the Irwin northwards to the Gascoyne river, about 300 m., and probably all the way to the Kimberley district.
The main body of his works belongs, so far as can be ascertained from the scanty evidence which we have, to the latter half of his life; 206 B.C. is the approximate date of the Miles gloriosus; cf.