[1] : The Collaborative International Dictionary of English v.0.48

cong \cong\, n. med.
   an abbreviation of congius.
   1913 webster
see also:
congius 

[2] : The Collaborative International Dictionary of English v.0.48

congius \con"gius\, n. l.
   1. roman antiq. a liquid measure containing about three
      quarts.
      1913 webster

   2. med. a gallon, or four quarts. often abbreviated to
      cong.
      1913 webster
see also:
cong. 

Cong >> C Words
Cong, definition of term: Cong
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