differential

Universal Words noun, adjective noun 1 ~ (between A and B) a difference in the amount, value or size of sth, especially the difference in rates of pay for people doing different work in the same industry or profession: wage / pay / income differentials 2 (also differential gear) a GEAR that makes it possible for a vehicle's back wheels to turn at different speeds when going around corners adjective [onlybeforenoun] (formal) showing or depending on a difference; not equal: the differential treatment of prisoners based on sex and social class * differential rates of pay