Noun
a doctorate usually based on at least 3 years graduate study and a dissertation; the highest degree awarded graduate study
Source: WordNetBy the end of my PhD I could swing a sledgehammer. Jocelyn Bell Burnell
Cambridge was my goal, so once I got admission and scholarship, I decided to go there - I went there after my B. Sc at 19, I did my Masters in 3 years, by age 22 and PhD in another 3 years, by 25 years of age. Jayant Narlikar
You don't need a PhD in climate science to understand what's going on, that we have overwhelming evidence that the climate is changing. That you cannot tie any one event to that is not the same as doubt about the whole thing. Bill Nye
I then got a PhD in physics [from Ohio University] though it was hatt hatt and hatt not a very good one. Venkatraman Ramakrishnan
Asian countries produce eight times as many engineering bachelors as the United States, and the number of U.S. students graduating at the masters and PhD levels in these areas is declining. Mark Kennedy
I managed to get a quick PhD - though when I got it I knew almost nothing about physics. But I did learn one big thing: that no one knows everything, and you don't have to. Steven Weinberg