Definition of senior

The word "senior" has its roots in Latin. In Latin, the word "senior" means "older" or "more advanced in age." This word is derived from the Latin word "senex," which means "old man." The Latin word "senex" is also the source of the English word "senility," which refers to the state of being old. In the 15th century, the Latin word "senior" was borrowed into Middle English and initially referred to a person who was older or more experienced in a particular field or profession. Over time, the use of the word "senior" expanded to include individuals who were older in age or held a position of authority or leadership. Today, the term "senior" is commonly used to refer to individuals who are older, more experienced, or hold positions of authority, such as senior citizens, senior management, or senior officers.