(mathematics) an infinitesimal change in a variable in a partial derivative, or the result of partial differentiation

plural of differential psychologist

(psychology) A psychologist who focuses their studies on differential psychology.

plural of differential structure

(topology) A structure defined for a (topological) manifold so that it supports differentiation of functions defined on it.

A thermometer for gauging very small differences in temperature.

plural of differential thermometer

plural of differential screw

(engineering) A mechanism that uses two screw threads to make small, precise adjustments to the spacing between two objects, as in focusing a microscope or moving the anvils of a micrometer.

(mechanics) A type of differential gear used in automobile construction, allowing for output shafts to have different angular velocity, while equalizing torque applied to each output shaft.