The term "Heir Apparent" refers to a person who is first in line to inherit a title, throne, or estate, and whose claim cannot be easily displaced. This designation is often used in monarchies, where the heir apparent is typically the eldest child of the reigning monarch, such as Prince William in the British royal family. An heir apparent is distinguished from an "heir presumptive," who may lose their claim if a more eligible heir is born. The status of an heir apparent is usually formalized through legal or ceremonial recognition, ensuring a clear line of succession within a family or institution.