(physics) mass defect

A disagreement.

plural of learning difference

A learning disability.

(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 quotient

A difference between the value of a function evaluated at a number, and the value of the same function evaluated at a different number, a fixed distance from the first.

(idiomatic, intransitive) To carry out an action, the result of which is a significant change, or an altered circumstance. / (idiomatic, intransitive) To be of importance; to matter.

plural of spot the difference

plural of goal difference