Synonyms

Ph.D.

American

[pee-eych-dee] / ˈpiˌeɪtʃˈdi /

abbreviation

plural

Ph.D.s

the highest degree, a doctorate, awarded by a graduate school in a field of academic study, usually to a person who has completed at least three years of graduate study and a dissertation approved by a committee of professors.
a person who has been awarded this degree.

Etymology

Origin of Ph.D.

First recorded in 1870–75; from Latin Philosophiae Doctor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“Making sure you have some type of regular structure that is very, very small,” says Kayley Waltz, a fifth-year Ph.D. student at Johns Hopkins.

From The Wall Street Journal

He went to high school in Shanghai and studied mathematics at the city’s Jiao Tong University, before entering a math Ph.D. program at New York’s Columbia University.

From The Wall Street Journal

The work began with Appler's Ph.D. research at The University of Texas Marine Science Institute in 2019, when she extracted DNA from marine sediments.

From Science Daily

He moved to the U.S. to start a Ph.D. program in August 2024, then started posting photos of company presentations and details about Pixel components on social media.

From The Wall Street Journal

On Tuesday, she and two Ph.D. students took water samples on a placid bend of the river near a creek that had been swollen with sewage.

From The Wall Street Journal

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023