English dictionary
ascertain
verbPronunciation
ˌæsəˈteɪn
Audio pronunciation
Parts of speech
Definitions
verb
- be careful or certain to do something; make certain of something
verb
- learn or discover with certainty
verb
- establish after a calculation, investigation, experiment, survey, or study
verb
- find out, learn, or determine with certainty, usually by making an inquiry or other effort
Example sentences
He verified that the valves were closed
See that the curtains are closed
control the quality of the product
find the product of two numbers
The physicist who found the elusive particle won the Nobel Prize
I want to see whether she speaks French
See whether it works
find out if he speaks Russian
Check whether the train leaves on time