Definition of PhD noun from the Oxford Advanced Learner's Dictionary

PhD

noun (also Ph.D. especially in North American English)
ˌpiː eɪtʃ ˈdiː
 
; ˌpiː eɪtʃ ˈdiː
 
 
the abbreviation for ‘Doctor of Philosophy’ (a university degree of a very high level that is given to somebody who has done research in a particular subject)
to be/have/do a PhDAnne Thomas, PhD
Usage noteUsage note: EducationLearningacquire/get/lack (an) education/training/(British English) (some) qualificationsreceive/provide somebody with training/tuitiondevelop/design/plan a curriculum/(especially British English) course/(North American English) program/syllabusgive/go to/attend a class/lesson/lecture/seminarhold/run/conduct a class/seminar/workshopsign up for/take a course/classes/lessonsSchoolgo to/start preschool/kindergarten/nursery schoolbe in the first, second, etc. (North American English) grade/(especially British English) year (at school)study/take/drop history/chemistry/German, etc.(British English) leave/finish/drop out of/(North American English) quit school(North American English) graduate high school/collegeProblems at schoolbe the victim/target of bullying(British English) play truant from/(both British English, informal) bunk off/skive off school (= not go to school when you should)(both especially North American English) skip/cut class/school(British English) cheat in/(North American English) cheat on an exam/a testget/be given a detention (for doing something)be expelled from/be suspended from schoolWork and examsdo your homework/(British English) revision/a project on somethingwork on/write/do/submit an essay/a dissertation/a thesis/an assignment/(North American English) a paperfinish/complete your dissertation/thesis/studies/courseworkhand in/(North American English) turn in your homework/essay/assignment/paperstudy/prepare/(British English) revise/(North American English) review/(North American English, informal) cram for a test/an examtake/(both British English) do/sit a test/an exam(especially British English) mark/(especially North American English) grade homework/a test(British English) do well in/(North American English) do well on/(informal, especially North American English) ace a test/an exampass/fail/(informal, especially North American English) flunk a test/an exam/a class/a course/a subjectUniversityapply to/get into/go to/start college/(British English) universityleave/graduate from law school/college/(British English) university (with a degree in computer science)study for/take/(British English) do/complete a law degree/a degree in physics(both North American English) major/minor in biology/philosophyearn/receive/be awarded/get/have/hold a master's degree/a bachelor's degree/a PhD in economics