(dated) A person who operates a radio transmitter on a ship or in an outpost, military unit, etc., in order to communicate over long distances.

plural of telephone operator

A person who accomplishes tasks with efficiency and grace, especially one with verbal skills who is persuasive in interpersonal relationships, negotiation, etc.

plural of wireless operator

(programming) An operator taking three operands, specifically the operator ?: used in many programming languages to select one of two values depending on a third value.

plural of ternary operator

plural of binary operator

(arithmetic) Any of the four basic operators in arithmetic, namely addition, subtraction, multiplication and division.

(calculus) A differential operator that preserves mathematical smoothness.

plural of smooth operator