From longman dictionary of contemporary english what /wɒt $ wɑːt, wʌt/ s1 w1 pronoun, determiner, predeterminer 1 used to ask for information or for someone’s opinion what are you doing?. Used in questions that show you are….
The meaning of what is —used as an interrogative expressing inquiry about the identity, nature, or value of an object or matter.. Used to ask for information about people or things: