operator

noun

1. 1

   One who operates.

2. 2

   A telecommunications facilitator whose job is to establish temporary network connections.

3. 3

   A function or other mapping that carries variables defined on a domain into another variable or set of variables in a defined range.

4. 4

   The game of Chinese whispers.

5. 5

   A person who is adept at making deals or getting results, especially one who uses questionable methods.

6. 6

   A member of a military special operations unit.

7. 7

   The administrator of a channel or network on IRC.

8. 8

   A symbol that represents a construct in a programming language and differs from a normal function in its syntax.

9. 9

   A kind of expression that enters into an a-bar movement dependency and is said to bind a variable.

   “In the sentence "What did Bill say he wants to buy?", "what" is an operator, binding a phonetically empty variable.”