Effervescence
Pronunciation : Ef`fer*ves"cence, Ef`fer*ves"cen*cy
Part of Speech : n.
Etymology : [Cf. F. effervescence.]
Definition : Defn: A kind of natural ebullition; that commotion of a fluid which takes place when some part of the mass flies off in a gaseous form, producing innumerable small bubbles; as, the effervescence of a carbonate with citric acid.
Source : Webster's Unabridged Dictionary, 1913