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Police are trying to ascertain the facts of the case.
We need to ascertain whether the project is feasible.
This much could easily be ascertained from the newspapers.
Experts were unable to ascertain the cause of the accident.
The police have ascertained that he knew the victim.
This is the American English definition of ascertain. View British English definition of ascertain.
a sweet brown powder that tastes like chocolate and is made from the seeds of a Mediterranean tree