Queen guitarist Brian May has one in astrophysics

• Prof's deg., often
• "Is there anyone on this plane who can help us with an emergency semiotics lecture?!?" answerer, maybe
• Post grad degree
• High academic attainment
• Grad student's goal, perhaps
• Impressive degree, briefly
• Post grad. degree
• Degree often held by a prof
• Many a candidates’ goal: Abbr

Wikipedia Word definitions in Wikipedia
PHD or PhD may refer to: