Used other than figuratively or idiomatically: see what, is, the, difference. / (idiomatic) The difference does not matter; so what?

(physics) mass defect

A disagreement.

(electronics) a logic gate whose output is TRUE when the two inputs are different; a Boolean logic XOR gate.

In a financial transaction, to settle on an amount midway between the offer and the asking price.

plural of learning difference

A learning disability.

plural of difference quotient

(mathematical analysis) The slope of a secant as obtained by dividing the vertical difference between two intersections of the secant and a curve with their horizontal distance. When the horizontal distance approaches zero the slope of the secant approaches the derivative of the curve.

plural of difference of opinion