(accounting) Income after deducting operating expenses but before deducting for income taxes, interest, and depreciation and amortization.

Third-person singular simple present indicative form of operate

A room in a hospital used for performing surgery (originally designed for operations in front of observers).

A room in a hospital used for performing surgical operations.

(computing) A logical operator that returns a value as soon as the outcome is certain, without necessarily testing all operands (for example, an OR operator returning true if the first operand evaluates as true, without evaluating the second operand).

Alternative spelling of short circuit operator

(mathematics) The sequence in which the various operations in a mathematical expression are to be evaluated.

Operated, or activated, by placing coins in a slot.

plural of operating system

(mathematics) A set of operations, each one having a fixed finite number of arguments and one output, which can be composed with others.