Definition of "ascertains" []

• Third-person singular simple present indicative form of ascertain. (verb)

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• "Zak quickly ascertains that the hose for the water filter has come undone, and has been squirting water down into the floor for some unknown but definitely significant length of time."
• "One ascertains the target and point of a resolution by reading it."
• "Here at Yale — and I should think that the same is true in many other clinical situations — your consultation with a qualified medical practitioner commences with a nurse who verifies your identity, takes your temperature, measures your blood pressure, takes your pulse, ascertains the amount of oxygen in your blood, and, finally, asks you if you are experiencing any pain."