verb (used with object)
Origin of ascertain
Examples from the Web for ascertaining
How far such welcome and adoption were voluntary we have no means of ascertaining.The Cradle of Mankind|W.A. Wigram
I regret that my want of osteological science prevented me from ascertaining to what animal these bones had belonged.
Happily, we shall never have an opportunity of ascertaining whether I am right.Josephine|John S. C. Abbott
We even forgot the luncheon baskets; and no one thought of ascertaining what the blast had accomplished.A Busy Year at the Old Squire's|Charles Asbury Stephens
After ascertaining that the fox had not yet passed, they took their stations.Frank, the Young Naturalist|Harry Castlemon