From BiblePortal Wikipedia

King James Dictionary [1]

OPERA'TION, n. L. operatio.

1. The act or process of operating agency the exertion of power, physical, mechanical or moral.

Speculative painting without the assistance of manual operation, can never attain to perfection.

The pain and sickness caused by manna are the effects of its operation on the stomach.

So we speak of the operation of motives, reasons or arguments on the mind, the operation of causes, &c.

2. Action effect.

Many medicinal drugs of rare operation.

3. Process manipulation series of acts in experiments as in chimistry or metallurgy. 4. In surgery, any methodical action of the hand, or of the hand with instruments, on the human body, with a view to heal a part diseased, fractured or dislocated, as in amputation, &c. 5. Action or movements of an army or fleet as military or naval operations. 6. Movements of machinery. 7. Movements of any physical body.

Webster's Dictionary [2]

(1): ( n.) Something to be done; some transformation to be made upon quantities, the transformation being indicated either by rules or symbols.

(2): ( n.) The method of working; mode of action.

(3): ( n.) The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.

(4): ( 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.

(5): ( n.) Effect produced; influence.

(6): ( n.) That which is operated or accomplished; an effect brought about in accordance with a definite plan; as, military or naval operations.

International Standard Bible Encyclopedia [3]

op - ẽr - ā´shun ( מעשׂה , ma‛ăseh , "work"; ἐνέργεια , enérgeia , ἐνέργημα , enérgēma , "energy"): Twice used in the Old Testament of God's creative work (  Psalm 28:4 ,  Psalm 28:5;  Isaiah 5:12 ). The Holy Spirit's inworking and power are manifest in the bestowal of spiritual gifts on individuals and on the church (  1 Corinthians 12:6 the King James Version), and in the resurrection of Jesus Christ, through which energy or operation of God those dead in sins are, through faith, raised to newness of life (  Colossians 2:12 the King James Version).