Meaning of “PhD” in the English Dictionary

british dictionary

(Definition of “PhD” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"Ph.D." in American English

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abbreviation for doctor of philosophy (= the highest college degree or a person having this):

He earned a Ph.D. in physics from Northwestern University.

(Definition of “Ph.D.” from the Cambridge Academic Content Dictionary © Cambridge University Press)