Dictionary.com

Ph.D.

[ pee-eych-dee ]
/ ˈpiˌeɪtʃˈdi /
Save This Word!

abbreviation, noun, 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.
QUIZ
GOOSES. GEESES. I WANT THIS QUIZ ON PLURAL NOUNS!
Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?
Also called Doctor of Philosophy [dok-teruhv fi-los-uh-fee] /ˈdɒk tər əv fɪˈlɒs ə fi/ .

Origin of Ph.D.

First recorded in 1870–75; from Latin Philosophiae Doctor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use Ph.D. in a sentence

British Dictionary definitions for Ph.D.

PhD

abbreviation for
Doctor of PhilosophyAlso: DPhil
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for Ph.D.

PhD

abbr.
Philosophiae Doctor (Doctor of Philosophy)
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK