| Differential (a.) Relating to or indicating a difference |
| Differential (a.) Of or pertaining to a differential, or to differentials. |
| Differential (a.) Relating to differences of motion or leverage |
| Differential (n.) An increment, usually an indefinitely small one, which is given to a variable quantity. |
| Differential (n.) A small difference in rates which competing railroad lines, in establishing a common tariff, allow one of their number to make, in order to get a fair share of the business. The lower rate is called a differential rate. Differentials are also sometimes granted to cities. |
| Differential (n.) One of two coils of conducting wire so related to one another or to a magnet or armature common to both, that one coil produces polar action contrary to that of the other. |
| Differential (n.) A form of conductor used for dividing and distributing the current to a series of electric lamps so as to maintain equal action in all. |
| differential diagnosis a systematic method of diagnosing a disorder (e.g., headache) that lacks unique symptoms or signs |
| differential blood count counting the number of specific types of white blood cells found in cubic millimeter of blood, may be included as part of a complete blood count |
| differential analyzer an analog computer designed to solve differential equations |
| differential gear / differential 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 |
| differential a quality that differentiates between similar things |
| marginal cost / incremental cost / differential cost the increase or decrease in costs as a result of one more or one less unit of output |
| difference threshold / differential threshold / difference limen / differential limen the smallest change in stimulation that a person can detect |
| differential calculus / method of fluxions the part of calculus that deals with the variation of a function with respect to changes in the independent variable (or variables) by means of the concepts of derivative and differential |
| derived function / derivative / differential coefficient / differential / first derivative the result of mathematical differentiation, the instantaneous change of one quantity relative to another, df(x)/dx |
| differential psychology the branch of psychology that studies measurable differences between individuals |