Exhaust

a. [Lat. exhaurio, exhaustum, from ex, and haurio, to draw out.] To draw up, or out, as liquids; to empty by drawing out; to use, expend, or consume; to expend the whole by exertion. -a. [Lat. exhaust us .] Drained; having lost its energy. -n. The steam emitted from the cylinder after being used. Exhaust'er,n. That which exhausts, or draws out. Exhaustible, a. That may be exhausted. Exhaustion, n. [Fr., from Lat. exhaustio .] Act of exhausting, drawing out, draining out, or throwing off; act of emptying completely of the contents; state of being exhausted. (Geom.) An ancient geometrical method which has been replaced by the modern differential calculus. The ancients employed this method in their difficult researches, particularly in the theory of curve lines and surfaces, and in determining areas and volumes. As they admitted no demonstrations but such as are perfectly rigorous, they did not consider curves as polygons of a great number of sides; but in attempting to discover the properties of any curve, they regarded it as the fixed term or limit to which the inscribed and circumscribed polygons continually approach, and approach the nearer as the number of their sides is increased. Thus they exhausted, as it were, the space between the polygons and the curve; and hence this method of procedure was called the method of exhaustion. Exhaustive, a. That exhausts. Exhaust'le , a. Not to be exhausted; not to be wholly drawn off or emptied; inexhaustible. Exhe'dra, n. See EXEDRA. Exhereda'tion, n. [Fr. exhérédation.] (Law.) The act of disinheriting. (R.)