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2 definitions found
 for Exhaust port
From The Collaborative International Dictionary of English v.0.48 :

  Port \Port\, n. [F. porte, L. porta, akin to portus; cf. AS.
     porte, fr. L. porta. See Port a harbor, and cf. Porte.]
     1. A passageway; an opening or entrance to an inclosed place;
        a gate; a door; a portal. [Archaic]
        [1913 Webster]
  
              Him I accuse
              The city ports by this hath entered.  --Shak.
        [1913 Webster]
  
              Form their ivory port the cherubim
              Forth issuing.                        --Milton.
        [1913 Webster]
  
     2. (Naut.) An opening in the side of a vessel; an embrasure
        through which cannon may be discharged; a porthole; also,
        the shutters which close such an opening.
        [1913 Webster]
  
              Her ports being within sixteen inches of the water.
                                                    --Sir W.
                                                    Raleigh.
        [1913 Webster]
  
     3. (Mach.) A passageway in a machine, through which a fluid,
        as steam, water, etc., may pass, as from a valve to the
        interior of the cylinder of a steam engine; an opening in
        a valve seat, or valve face.
        [1913 Webster]
  
     Air port, Bridle port, etc. See under Air, Bridle,
        etc.
  
     Port bar (Naut.), a bar to secure the ports of a ship in a
        gale.
  
     Port lid (Naut.), a lid or hanging for closing the
        portholes of a vessel.
  
     Steam port, & Exhaust port (Steam Engine), the ports of
        the cylinder communicating with the valve or valves, for
        the entrance or exit of the steam, respectively.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Exhaust \Ex*haust"\, a. [L. exhaustus, p. p.]
     1. Drained; exhausted; having expended or lost its energy.
        [1913 Webster]
  
     2. Pertaining to steam, air, gas, etc., that is released from
        the cylinder of an engine after having preformed its work.
        [1913 Webster]
  
     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.
        [1913 Webster]

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