The term "Typeid" refers to a feature in programming languages, particularly in C++, that allows developers to determine the type of an object at runtime. It is part of the RTTI (Run-Time Type Information) system, which helps in identifying the exact type of an object when dealing with inheritance and polymorphism. This is useful for ensuring that the correct methods are called on objects of derived classes. Using "Typeid," programmers can compare types and safely cast objects, enhancing code reliability. When applied, it returns a type_info object that contains information about the type, including its name and properties. This functionality aids in debugging and maintaining complex codebases.