(idiomatic) The genuine thing, neither a substitute nor an imitation.

plural of real property

(law) real estate.

(mathematical analysis, of a function) Having only real values: having as its codomain the set of real numbers or a subset thereof.

(informal) Expresses disbelief, or urges someone to face reality.

The national anthem of Spain.

(mathematics) The horizontal line in the complex plane, every point on which corresponds to a real number

(computing) The duration required by a computer system to complete a particular task.

(mathematics) The branch of mathematics dealing with the real numbers and related structures.

As happens in real life; not fictional or theoretical; actual as opposed to believed or assumed.