only 1 use
(click/touch triangles for details)
Definition
find out, learn, or determine with certainty (usually by making an effort)
- It might, too, be much better done if I were at home among my papers, which would aid my memory, and help to ascertain dates; but my return being uncertain and having just now a little leisure, I will endeavor to recollect and write what I can; if I live to get home, it may there be corrected and improv'd.
There are no more uses of "ascertain" in The Autobiography of Benjamin Franklin.
Typical Usage
(best examples)