Op"er*a`tor (?), n. [L.]


One who, or that which, operates or produces an effect.

2. Surg.

One who performs some act upon the human body by means of the hand, or with instruments.


A dealer in stocks or any commodity for speculative purposes; a speculator.

[Brokers' Cant]

4. Math.

The symbol that expresses the operation to be performed; -- called also facient.


© Webster 1913.