(Ex*hale") v. t. [imp. & p. p. Exaled p. pr. & vb. n.. Exaling.] [L. exhalare; ex out + halare
to breathe; cf.F. exhaler. Cf. Inhale.]
1. To breathe out. Hence: To emit, as vapor; to send out, as an odor; 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 sun exhales the moisture of the earth.
(Ex*hale"), v. i. To rise or be given off, as vapor; to pass off, or vanish.
Their inspiration exhaled in elegies.Prescott.
(Ex*hale"ment) n. Exhalation. [Obs.]
(Ex*hal"ence) n. Exhalation. [R.]
(Ex*haust") v. t. [imp. & p. p. Exhausted; p. pr. & vb. n. Exhausting.] [L. exhaustus, p. p.
of exhaurire; ex out + haurire, haustum, to draw, esp. water; perhaps akin to Icel. asua to sprinkle,
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. (Chem.) 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 under Receiver.
Syn. To spend; consume; tire out; weary.
(Ex*haust"), a. [L. exhaustus, p. p.]
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
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 (Steam Engine), the blast orifice or nozzle. Exhaust pipe (Steam Engine), the
pipe that conveys exhaust steam from the cylinder to the atmosphere or to the condenser. Exhaust
port (Steam Engine), the opening, in the cylinder or valve, by which the exhaust steam escapes.
Exhaust purifier (Milling), a machine for sorting grains, or purifying middlings by an exhaust draught.
Knight. Exhaust steam (Steam Engine), steam which is allowed to escape from the cylinder after