[′dif·rəns ‚kwō·shənt] (mathematics) The increment of the value of a function divided by the increment of the independent variable; for the function y = ƒ(x), it is Δ y /Δ x = [ƒ(x + Δ x) - ƒ(x)]Δ x, where Δ x and Δ y are the increments of x and y.AcronymsSeedrag queen