Index of English words, starting with "op"

(1) - Operation (n.) Any methodical action of the hand, or of the hand with instruments, on the human body, to produce a curative or remedial effect, as in amputation, etc.
(2) - Operation (n.) Something to be done; some transformation to be made upon quantities, the transformation being indicated either by rules or symbols.
(3) - Operation (n.) Effect produced; influence.
(4) - Operation (n.) That which is operated or accomplished; an effect brought about in accordance with a definite plan; as, military or naval operations.
(5) - Operation (n.) The method of working; mode of action.
(6) - Operation (n.) The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.

(1) - Operative (n.) A skilled worker; an artisan; esp., one who operates a machine in a mill or manufactory.
(2) - Operative (a.) Based upon, or consisting of, an operation or operations; as, operative surgery.
(3) - Operative (a.) Producing the appropriate or designed effect; efficacious; as, an operative dose, rule, or penalty.
(4) - Operative (a.) Having the power of acting; hence, exerting force, physical or moral; active in the production of effects; as, an operative motive.

(1) - Operatively (adv.) In an operative manner.