plural of operational service period

plural of additive operation

plural of order of operations

plural of operating loss

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

plural of operandum

Resembling or characteristic of opera.

(archaic) An instrument or machine for measuring work done, especially the number of rotations by a machine or wheel in manufacturing cloth.

A generalized version of the Laplace operator that can be used with Riemannian and pseudo-Riemannian manifolds.

The act of operating or working; operation.