Visitor meaning : Someone who visits someone else; someone staying as a guest. Someone who pays a visit to a specific place or event; a sightseer or tourist. (usually in the plural) Someone, or a team, that is playing away from home. A person authorized to visit an institution to see that it is being managed properly. An extraterrestrial being on Earth for any reason. An object which lands or passes by Earth or its orbit. A head or overseer of an institution such as a college (in which case, equivalent to the university's chancellor) or cathedral or hospital, who resolves disputes, gives ceremonial speeches, etc. The object in the visitor pattern that performs an operation on the elements of a structure one by one.