Definition of Exhast
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, pump.]
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 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
(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 having been
employed to produce motion of the piston. -- Exhaust
valve (Steam Engine), a valve that lets exhaust
steam escape out of a cylinder.
Ex*haust", n. (Steam Engine)
1. The steam let out of a cylinder after it has
done its work there.
2. The foul air let out of a room through a
register or pipe provided for the purpose.
- Webster's Unabridged Dictionary (1913)
- 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.
- To empty by drawing or letting out the contents; as, to exhaust a well, or a treasury.
- 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.
- To bring out or develop completely; to discuss thoroughly; as, to exhaust a subject.
- (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.
- Drained; exhausted; having expended or lost its energy.
- Pertaining to steam, air, gas, etc., that is released from the cylinder of an engine after having preformed its work.
- System consisting of the parts of an engine through which burned gases or steam are discharged
- The steam let out of a cylinder after it has done its work there.
- The foul air let out of a room through a register or pipe provided for the purpose.
- An exhaust pipe, especially on a motor vehicle.
- The Nuttall Encyclopedia
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