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Memory Alpha

A Doctor of Philosophy, abbreviated as PhD, was a doctorate. Those with PhDs were addressed as "doctor".

At some point before 2265, Elizabeth Dehner had earned a PhD. (TOS: "Where No Man Has Gone Before")

Ira Graves had earned a PhD prior to 2365. (TNG: "The Schizoid Man")

This academic degree still existed by the 29th century. Some of the bearers of this degree worked at the Temporal Integrity Commission. On the dedication plaque of the USS Relativity, R. Berman, P. Lauritson, R. Beltran, T. Russ, G. Wang, and J. Ryan were listed with this degree. (VOY: "Relativity", dedication plaque)


See also

Background information

According to the unseen cover of the Handbook of Exobiology, its author, G. Thomas Emslie, was a PhD.

As a psychiatrist – a medical specialist, unlike a psychologist – Dr. Dehner most probably had an MD as well. (This would be consistent with the many people today who hold doctorates in both medicine and a related field.)

It seems likely that several of the non-medical doctors referenced on Star Trek had PhDs. For example, Dr. Kila Marr or Dr. Telek R'Mor were in professions (biology and astrophysics) that, at least on "our" 21st century Earth, award the PhD for their doctoral/terminal degrees. The same is likely true for other doctors who were clearly not physicians, such as Dr. Richard Daystrom.

Dr. Dehner's file actually misspells the term, using P.H.D. rather than the correct PH.D. (Philosophy being one word)

In ultimately unused dialogue from the script of the 2009 film Star Trek, Hikaru Sulu referred to himself as a PhD in astrophysics. [1]

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