Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An algebraic equation with two or more variables whose coefficients are integers, studied to determine all integral solutions.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

After Diophantus, third-century A.D. Greek mathematician.

Examples

  • These three cities top Forbes 'fourth-annual list of best cities for young professionals -- places where ambitious college grads can get a strong start on a high-powered career.

    America's Best Cities For Young Professionals

  • The official reason was to speak at the fourth-annual Alfred E.

    Daring Young Men

  • The recession has shaken up our fourth-annual ranking of the Best States for Business with some big movers up (North Dakota, Oregon and Iowa) and ...

    Mike Robbins: Let's Get Real About Money: Tips for Financial Sobriety

  • The second award was the fourth-annual "Schleppie" for the city's least reliable buses.

    Gene Russianoff: Pokey Buses

  • The recession has shaken up our fourth-annual ranking of the Best States for Business with some big movers up (North Dakota, Oregon and Iowa) and some former high-fliers on the way down (Florida, Nevada and Arizona).

    The Best States For Business

  • Animal Planet's fourth-annual three-hour puppy romp (continuously repeated beginning at 3 p.m. today) promises to be the usual feel-good Super Bowl Sunday alternative to football and halftime festivities.

    TiVoWorthy TV for the Week of February 3, 2008

  • The Animation Show Mike Judge, the creator of "Beavis and Butt-Head" and "King of the Hill," opens his fourth-annual celebration of independent animation, The Animation Show.

    Man Among 'Men'

  • The fourth-annual program, which runs from Sept. 5 to Oct. 3, includes work by 16 contemporary Irish playwrights, panel discussions and a film screening.

    NYT > Home Page

  • At Sundance, gift lounges dominate the freebie scene, but at Coachella, brands want to reach a wider audience of "influencers" with events such as the G by Guess Artist Retreat Pool Party and BBQ, the A/X + 944 Neon Carnival, the Mulberry BBQ & Pool Party and the fourth-annual Jeremy Scott + Adidas Shindig.

    The Seattle Times

  • Thousands of intrepid puzzle-solvers gathered in downtown Washington on June 5 for our fourth-annual game of brainteasers and fun.

    The Washington Post: National, World & D.C. Area News and Headlines - The Washington Post

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