1. A series of gears in a car, a truck, etc. that allows for the rear wheels to turn at different rates; such as, for turning a corner: After the accident, Sandy had to replace the differential in his truck because it was damaged.
2. The distinguishing degree of not being similar to another person or items: There was a considerable differential in salaries between the newly hired salespeople and the those with years of experience.

Although there was an obvious price differential between the two cars, Samuel and Gertrude decided it was worth it to get the one that had more safety features.

Descriptive of the distinction among items or people: The most differential characteristic between the two automobiles was the finishing of their interiors because one was finished in cloth and the other was designed with leather.

1. A mechanical or electronic analog computer used primarily to solve especially complicated differential equations.
2. A form of analog computer that utilizes interconnected electronic integrators to solve differential equations, an equation expressing a relationship between functions and their derivatives.

Knowledge that is acquired by considering the probability of one disease compared to the likelihood of some other diseases that might be responsible for a patient's illness: The differential diagnosis includes considering a runny nose, an allergic rhinitis (hay fever), the abuse of nasal decongestants, and a common cold to see if there are any connections between any of them.

Any device that indicates the differences in pressures between two fluids, regardless of any changes in their absolute pressures.

An input or output type of circuit which only amplifies or responds to the difference of two signals, and does not respond to the signal with respect to ground or a supply voltage.