The Collaborative International Dictionary of English v.0.48:

Voracity \Vo*rac"i*ty\, n. [L. voracitas: cf. F. voracit['e].]
   The quality of being voracious; voraciousness.
   [1913 Webster]

WordNet (r) 3.0 (2006):

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