operator

Op"er*a`tor, n. Etym: [L.] 1. One who, or that which, operates or produces an effect. 2. (Surg.) Defn: One who performs some act upon the human body by means of the hand, or with instruments. 3. A dealer in stocks or any commodity for speculative purposes; a speculator. [Brokers' Cant] 4. (Math.) Defn: The symbol that expresses the operation to be performed; -- called also facient.

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