A description, usually graphical, showing the major participants or components in a system and their interrelationships.

A showing of something — such as a variable, term, or object — in terms of the specific process or set of validation tests used to determine its presence and quantity.

(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

plural of operating expense

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