A doctorate is one of the highest academic degrees a person can earn at a university, representing years of advanced study and original research in a specific field. When someone completes a doctorate, they become a doctor in their area of expertise, whether that's physics, history, or hundreds of other subjects.

Earning a doctorate typically takes four to eight years beyond a bachelor's degree. The person must study their topic in great depth, then contribute something new to human knowledge by conducting original research and writing a long, detailed document called a dissertation. A graduate student studying ancient Rome who completes their doctorate might become a professor teaching history at a college.

Universities started awarding doctorates in medieval Europe to certify that someone had mastered a subject well enough to teach it to others. Today, people pursue doctorates for many purposes: to teach, to conduct research, to develop new technologies, or to become experts in specialized fields.

You might hear someone called “Dr. Martinez” or “Dr. Chen.” That title can indicate they've earned a doctorate and reached a very advanced level of formal education in their field. It represents years of dedication, curiosity, and intellectual achievement.