The Collaborative International Dictionary of English v.0.48:

Edacity \E*dac"i*ty\, n. [L. edacitas.]
   Greediness; voracity; ravenousness; rapacity. --Bacon.
   [1913 Webster] Edam

WordNet (r) 3.0 (2006):

edacity
    n 1: excessive desire to eat [syn: edacity, esurience,
         ravenousness, voracity, voraciousness]
    2: extreme gluttony [syn: edacity, esurience,
       rapaciousness, rapacity, voracity, voraciousness]