from
The Collaborative International Dictionary of English v.0.48
Effervesce \Ef`fer*vesce"\, v. i. [imp. & p. p. {Effervesced};
p. pr. & vb. n. {Effervescing}.] [L. effervescere; ex +
fervescere to begin boiling, incho., fr. fervere to boil. See
{Fervent}.]
1. To be in a state of natural ebullition; to bubble and
hiss, as fermenting liquors, or any fluid, when some part
escapes in a gaseous form.
[1913 Webster]
2. To exhibit, in lively natural expression, feelings that
can not be repressed or concealed; as, to effervesce with
joy or merriment. Effervescence