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A PhD, or Doctor of Philosophy, is a higher-level academic degree awarded by universities to individuals who have completed extensive research in a particular field of study.

It is often considered the highest degree that one can earn in a particular academic discipline.

To obtain a PhD, an individual typically needs to complete coursework, pass comprehensive exams, and write and defend a dissertation based on original research.

The length of time it takes to complete a PhD program can vary, but it is typically around three to five years, after a Master’s degree.

The purpose of a PhD program is to provide students with the knowledge and skills necessary to become experts and leaders in their chosen fields.