(mathematics) An extension of the differential operator, used in the theory of partial differential equations and quantum field theory.

The key word in a sentence.

plural of pseudodifferential operator

Synonym of Kleene star

plural of Kleene operator

Synonym of battery-powered

(law) A clause (of a judgment, order, resolution, etc.) which requires anything to be done or not to be done.

plural of operating table

A table on which a patient lies during a surgical operation.

(computing) A person who oversees the day-to-day operation of a computer system