The Collaborative International Dictionary of English v.0.48:
Flatulence \Flat"u*lence\, Flatulency \Flat"u*len*cy\, n. [Cf. F. flatulence.] The state or quality of being flatulent. [1913 Webster]WordNet (r) 3.0 (2006):
flatulency n 1: a state of excessive gas in the alimentary canal [syn: flatulence, flatulency, gas]