(mathematics) Any function of a real variable whose value increases (or is constant) as the variable increases.

(physics) A function of the position and spin of an electron; related to the probability of finding the electron in a specified position

(mathematics) Any function of a real variable whose value increases as the variable increases.

(architecture) A doctrine, in several fields, that the function of something should be reflected in its design and the materials used in its construction

(mathematics) Any of a set of functions the value of which can not be deduced from that of all the others.

(mathematics) An entire function

(electronics) An electronic logic circuit which inverts the phase of a signal

(astronomy) a relationship that specifies the mass distribution of a newly formed stellar population

(management) Any primary business function that would affect customers or profits if interrupted

The ratio of the Laplace transform of the primary feedback signal of a control system to that of the actuating signal