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• n  the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx
• n  a quality that differentiates between similar things
• n  a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves
• a  relating to or showing a difference
  differential treatment
• a  involving or containing one or more derivatives
  differential equation

• Before I was fifteen I had mastered differential and integral calculus.
• Business headache of the week was the soft-coal strike, with 400,000 miners still idle and negotiations snarled at week's end over removing the 40 wage differential in Southern.
• Undaunted by such practicalities, Cooper has also set up and solved by computer a set of differential equations for curved tunnels that would provide minimum gravity-powered .

• derived function
• derivative
• differential coefficient
• first derivative
• differential gear

News & Articles

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• USA vs. Panama: USMNT in complete control
  The United States sits tied on top of the extremely tight Hex, level with Mexico on goal differential and behind Costa Rica by one goal. They can open up a bit of a gap between themselves and one of their big rivals for a qualifying spot on Tuesday night, when they take on Panama.
  June 12, 2013 - Philly.com
• USA vs. Panama: USMNT dominates in front of raucous Seattle crowd
  Jozy Altidore and Eddie Johnson scored as the U.S. dominated Panama. The United States sits tied on top of the extremely tight Hex, level with Mexico on goal differential and behind Costa Rica by one goal.
  June 12, 2013 - Philly.com
• USA vs. Panama: TV schedule and how to watch online
  The United States sits tied on top of the extremely tight Hex, level with Mexico on goal differential and behind Costa Rica by one goal. They can open up a bit of a gap between themselves and one of their big rivals for a qualifying spot on Tuesday night, when they take on Panama.
  June 11, 2013 - Philly.com

Quotes

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• Ian Crocker in CNN
  It was a tight one,Crocker said. "I saw my short differential between getting a medal or not, but then I realized Michael's was pretty close, too. I'm really glad that he came out on top. It was everything that an Olympic final should be....
• Terry Francona in PhillySportsline
  I thought he threw some good pitches,Boston manager Terry Francona said about Matsuzaka's outing. "I thought he had some depth to his slider and there was some differential, and I thought his fastball was good. Just a lot of deep counts."
• Martin Whitmarsh in Sportinglife.com
  We've been very encouraged by the performance of the car in the wet this year,said Whitmarsh. "Last year we felt the performance differential to our chief rivals was decidedly more marked - there were some circuits where we were clearly...