Related Clues:

• Result of many years of study, for short
• Woodrow Wilson was the only U.S. prez to have one
• Impressive degree, briefly
• Prof's deg., often
• Janet Yellen's deg
• Scholar's accomplishment
• Pres. Wilson earned one
• Deg. that requires a defense
• Scholarly attainment
• One who got the third degree?
• Goal of many a candidate
• Third degree, for short
• Post-defense conferral
• Professor's degree, often: Abbr
• Major degree