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back pressure
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English Dictionary: back pressure by the DICT Development Group
2 results for back pressure
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Pressure \Pres"sure\ (?; 138), n. [OF., fr. L. pressura, fr.
      premere. See 4th {Press}.]
      1. The act of pressing, or the condition of being pressed;
            compression; a squeezing; a crushing; as, a pressure of
            the hand.
  
      2. A contrasting force or impulse of any kind; as, the
            pressure of poverty; the pressure of taxes; the pressure
            of motives on the mind; the pressure of civilization.
  
                     Where the pressure of danger was not felt.
                                                                              --Macaulay.
  
      3. Affliction; distress; grievance.
  
                     My people's pressures are grievous.   --Eikon
                                                                              Basilike.
  
                     In the midst of his great troubles and pressures.
                                                                              --Atterbury.
  
      4. Urgency; as, the pressure of business.
  
      5. Impression; stamp; character impressed.
  
                     All saws of books, all forms, all pressures past.
                                                                              --Shak.
  
      6. (Mech.) The action of a force against some obstacle or
            opposing force; a force in the nature of a thrust,
            distributed over a surface, often estimated with reference
            to the upon a unit's area.
  
      {Atmospheric pressure}, {Center of pressure}, etc. See under
            {Atmospheric}, {Center}, etc.
  
      {Back pressure} (Steam engine), pressure which resists the
            motion of the piston, as the pressure of exhaust steam
            which does not find free outlet.
  
      {Fluid pressure}, pressure like that exerted by a fluid. It
            is a thrust which is normal and equally intense in all
            directions around a point. --Rankine.
  
      {Pressure gauge}, a gauge for indicating fluid pressure; a
            manometer.

From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Back \Back\, a.
      1. Being at the back or in the rear; distant; remote; as, the
            back door; back settlements.
  
      2. Being in arrear; overdue; as, back rent.
  
      3. Moving or operating backward; as, back action.
  
      {Back charges}, charges brought forward after an account has
            been made up.
  
      {Back filling} (Arch.), the mass of materials used in filling
            up the space between two walls, or between the inner and
            outer faces of a wall, or upon the haunches of an arch or
            vault.
  
      {Back pressure}. (Steam Engine) See under {Pressure}.
  
      {Back rest}, a guide attached to the slide rest of a lathe,
            and placed in contact with the work, to steady it in
            turning.
  
      {Back slang}, a kind of slang in which every word is written
            or pronounced backwards; as, nam for man.
  
      {Back stairs}, stairs in the back part of a house; private
            stairs. Also used adjectively. See {Back stairs},
            {Backstairs}, and {Backstair}, in the Vocabulary.
  
      {Back step} (Mil.), the retrograde movement of a man or body
            of men, without changing front.
  
      {Back stream}, a current running against the main current of
            a stream; an eddy.
  
      {To take the back track}, to retrace one's steps; to retreat.
            [Colloq.]
No guarantee of accuracy or completeness!
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