| exhaust | 1. Drained; exhausted; having expended or lost its energy. 2. Pertaining to steam, air, gas, etc, that is released from the cylinder of an engine after having preformed its work. Exhaust draught, a forced draught produced by drawing air through a place, as through a furnace, instead of blowing it through. Exhaust fan, a fan blower so arranged as to produce an exhaust draught, or to draw air or gas out of a place, as out of a room in ventilating it. Exhaust nozzle, Exhaust orifice, a valve that lets exhaust steam escape out of a cylinder. Origin: L. Exhaustus, p.p. 1. To draw or let out wholly; to drain off completely; as, to exhaust the water of a well; the moisture of the earth is exhausted by evaporation. 2. To empty by drawing or letting out the contents; as, to exhaust a well, or a treasury. 3. To drain, metaphorically; to use or expend wholly, or till the supply comes to an end; to deprive wholly of strength; to use up; to weary or tire out; to wear out; as, to exhaust one's strength, patience, or resources. "A decrepit, exhausted old man at fifty-five." (Motley) 4. To bring out or develop completely; to discuss thoroughly; as, to exhaust a subject. 5. <chemistry> To subject to the action of various solvents in order to remove all soluble substances or extractives; as, to exhaust a drug successively with water, alcohol, and ether. Exhausted receiver. <physics> See Receiver. Synonym: To spend, consume, tire out, weary. Origin: L. Exhaustus, p.p. Of exhaurire; ex out + haurire, haustum, to draw, esp. Water; perhaps akin to Icel. Asua to sprinkle, pump. Source: Websters Dictionary (01 Mar 1998) |
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| exhaustion | 1. The act of draining out or draining off; the act of emptying completely of the contents. 2. The state of being exhausted or emptied; the state of being deprived of strength or spirits. 3. <mathematics> An ancient geometrical method in which an exhaustive process was employed. It was nearly equivalent to the modern method of limits. The method of exhaustions was applied to great variety of propositions, pertaining to rectifications and quadratures, now investigated by the calculus. Origin: Cf. F. Exhaustion. Source: Websters Dictionary (01 Mar 1998) |
| exhaustion atrophy | Atrophy, especially of glandular cells, believed to result from excessive functional activity or overstimulation. (05 Mar 2000) |
| exhaustion psychosis | Rarely used term for a confusional emotional state following an exhausting event. (05 Mar 2000) |