#capacitance_unit__capacitanceunit  a measure of the capacity of a circuit component to store charge
  supertype:  electromagnetic_unit__electromagneticunit__emu  any of various systems of units for measuring electricity and magnetism
  subtype:  picofarad  a unit of capacitance equal to one trillionth of a farad
  subtype:  millifarad  a unit of capacitance equal to one thousandth of a farad
  subtype:  farad__F  the capacitance of a capacitor that has an equal and opposite charge of 1 coulomb on each plate and a voltage difference of 1 volt between the plates
  subtype:  abfarad  a capacitance unit equal to one billion farads

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