#pressure  a force that compels; "the public brought pressure to bear on the government"
  supertype:  #force.influence  a powerful effect or influence: "the force of his eloquence easily persuaded them"
  subtype:  #pressure_unit  a unit measuring force per unit area
     subtype:  #standard_atmosphere__atmosphere__atm__standardpressure  a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade
        subtype:  #STP__s.t.p.  standard temperature and pressure
     subtype:  #pascal__Pa  a unit of pressure equal to one newton per square meter
     subtype:  #torr__millimeter_of_mercury__mm_Hg  a unit of pressure equal to 0.001316 atmosphere; named after Torricelli
     subtype:  #pounds_per_square_inch__psi  a unit of pressure
     subtype:  #millibar  a unit of atmospheric pressure equal to one thousandth of a bar; "atmospheric pressure at sea level is 1013 millibars"
     subtype:  #bar.pressure_unit  a unit of pressure equal to a million dynes per square centimeter
     subtype:  #barye__barabsolute__microbar  the absolute unit of pressure equal to one dyne per square centimeter

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