B2 to do something in order to discover if something is safe, works correctly, etc., or if something is present: The manufacturers are currently testing the new engine. They tested her blood for signs of the infection.Testing, checking and experimenting B1 to give someone a set of questions, in order to measure their knowledge or ability: Will you test me on the chemical formulae I've been learning?Questioning people and asking questions in generalCuriositySuspecting and questioning B2 If a situation tests someone, it proves how good, strong, etc. they are: That lecture really tested my powers of endurance, it was so boring.Proving and disproving › to do a medical examination of part of someone's body or of a particular physical abilityTesting, checking and experimenting