D defs.my
Entry 7 senses Webster, 1913

Pressure

/prĕshʹ-ə/ · Pres·sure · IPA /[ˈpɹɛʃ.ɚ]/
01 n. The act of pressing, or the condition of being pressed; compression; a squeezing; a crushing; as, a pressure of the hand.
  1. 1.
    The act of pressing, or the condition of being pressed; compression; a squeezing; a crushing; as, a pressure of the hand.
  2. 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. 3.
    Affliction; distress; grievance.
    “My people's pressures are grievous.” — Eikon Basilike.
    “In the midst of his great troubles and pressures.” Atterbury.
  4. 4.
    Urgency; as, the pressure of business.
  5. 5.
    Impression; stamp; character impressed.
    “All saws of books, all forms, all pressures past.” Shak.
  6. 6.
    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 amount upon a unit's area.(Mech.)
  7. 7.
    Electro-motive force.
Phrases & compounds
Atmospheric pressure — See under Atmospheric, Center, etc.
Back pressure — 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.
Pressure gauge — a gauge for indicating fluid pressure; a manometer.