dictionary.pt
ascertain
verbgeneral usecommon/ɐpuˈɾaɾ/a·pu·rar
Definitions
21
To find out or learn with certainty.
Usage examples
“The committee will ascertain the facts of the case.”
“We must ascertain who is responsible.”
Common combinations
ascertain the truthascertain the causeascertain the details
2
To improve by making small changes; to purify.
Usage examples
“He refined his technique over many years.”
“The sugar is refined to remove impurities.”
Common combinations
refine one's skillsrefine a processrefined taste