Verb
To render (a person) certain; to cause to feel certain; to make confident; to assure; to apprise.
To make (a thing) certain to the mind; to free from obscurity, doubt, or change; to make sure of; to fix; to determine.
To find out or learn for a certainty, by trial, examination, or experiment; to get to know; as, to ascertain the weight of a commodity, or the purity of a metal.
Source: Webster's dictionaryBut the extraordinary insight which some persons are able to gain of others from indications so slight that it is difficult to ascertain what they are, is certainly rendered more comprehensible by the view here taken. Charles Sanders Peirce
It is impossible to devise a scientific experiment to describe the creation process, or even to ascertain whether such a process can take place. The Creator does not create at the whim of a scientist. Henry M. Morris
MIND, n. A mysterious form of matter secreted by the brain. Its chief activity consists in the endeavor to ascertain its own nature, the futility of the attempt being due to the fact that it has nothing but itself to know itself with. Ambrose Bierce
And I say something else. If I were to ascertain that our soldiers really used violence on the women of Bangladesh, I'd insist on being the one to try them and punish them. Zulfikar Ali Bhutto
Court proceeding,except for certain limited situations,are open to the public.This is for the protection of the accused,to be certain to ascertain that there is a fair trial. Walter Cronkite
Capital markets reward you for what you learn that other people have yet to ascertain. Kenneth Griffin