Verb: ascertain ,a-su(r)'teyn
- Find out, learn, or determine with certainty, usually by making an inquiry or other effort
"ascertain whether the train leaves on time";
- determine, check, find out, see, watch, learn
- Learn or discover with certainty
"The detective ascertained the suspect's whereabouts"
- Establish after a calculation, investigation, experiment, survey, or study
"ascertain the product of two numbers";
- determine, find, find out
- Carefully verify or confirm something
"ascertain that all doors are locked before leaving";
- see, check, insure, ensure, make sure, make certain
Derived forms: ascertains, ascertained, ascertaining
Type of: act, demonstrate, discover, establish, find out, get a line [informal], get wind, get word, hear, learn, move, pick up, prove, see, shew [Brit, archaic], show, verify