| exfoliative gastritis | Gastritis with excessive shedding of mucosal epithelial cells. (05 Mar 2000) |
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| exhalation | 1. Breathing out. Synonym: expiration. 2. The giving forth of gas or vapor. 3. Any exhaled or emitted gas or vapor. Origin: L. Ex-halo, pp. -halatus, to breathe out (05 Mar 2000) |
| exhale | 1. To breathe out. Hence: To emit, as vapor; to send out, as an odour; to evaporate; as, the earth exhales vapor; marshes exhale noxious effluvia. "Less fragrant scents the unfolding rose exhales." (Pope) 2. To draw out; to cause to be emitted in vapor; as, the sum exhales the moisture of the earth. Origin: L. Exhalare; ex out + halare to breathe; cf.F. Exhaler. Cf. Inhale. Source: Websters Dictionary (01 Mar 1998) |
| 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) |
| 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) |
| exhibit | 1. To hold forth or present to view; to produce publicly, for inspection; to show, especially in order to attract notice to what is interesting; to display; as, to exhibit commodities in a warehouse, a picture in a gallery. "Exhibiting a miserable example of the weakness of mind and body." (Pope) 2. To submit, as a document, to a court or officer, in course of proceedings; also, to present or offer officially or in legal form; to bring, as a charge. "He suffered his attorney-general to exhibit a charge of high treason against the earl." (Clarendon) 3. <medicine> To administer as a remedy; as, to exhibit calomel. To exhibit a foundation or prize, to hold it forth or to tender it as a bounty to candidates. To exibit an essay, to declaim or otherwise present it in public. Origin: L. Exhibitus, p. P. Of exhibere to hold forth, to tender, exhibit; ex out + habere to have or hold. See Habit. Source: Websters Dictionary (01 Mar 1998) |
| exhibition | 1. The act of exhibiting for inspection, or of holding forth to view; manifestation; display. 2. That which is exhibited, held forth, or displayed; also, any public show; a display of works of art, or of feats of skill, or of oratorical or dramatic ability; as, an exhibition of animals; an exhibition of pictures, statues, etc.; an industrial exhibition. 3. Sustenance; maintenance; allowance, especially. For meat and drink; pension. <engineering> Specifically: Private benefaction for the maintenance of scholars. "What maintenance he from his friends receives, Like exhibition thou shalt have from me." (Shak) "I have given more exhibitions to scholars, in my days, than to the priests." (Tyndale) 4. <medicine> The act of administering a remedy. Origin: L. Exhibitio a delivering: cf. F. Exhibition. Source: Websters Dictionary (01 Mar 1998) |
| exhibitionism | A disorder in which the act of exposing the genitals to an unsuspecting stranger produces sexual excitement with no attempt at further sexual activity with the stranger. (12 Dec 1998) |
| exhibitionist | One who engages in exhibitionism. (05 Mar 2000) |
| exhilarant | Mentally stimulating. Origin: L. Ex-hilaro, pp. -atus, pres. P. -ans, to gladden (05 Mar 2000) |
| exigency | Origin: LL. Exigentia: cf. F. Exigence. The state of being exigent; urgent or exacting want; pressing necessity or distress; need; a case demanding immediate action, supply, or remedy; as, an unforeseen exigency. "The present exigency of his affairs." Synonym: Demand, urgency, distress, pressure, emergency, necessity, crisis. Source: Websters Dictionary (01 Mar 1998) |
| eximious | Select; choice; hence, extraordinary, excellent. "The eximious and arcane science of physic." (Fuller) Origin: L. Eximius taken out, i. E. Select, fr. Eximere to take out. See Exempt. Source: Websters Dictionary (01 Mar 1998) |
| exine | <botany> External part of pollen wall that is often elaborately sculptured in a fashion characteristic of the plant species. Contains sporopollenin. The term is also used for the outer part of a spore wall. (18 Nov 1997) |