Inflected forms: ef·fer·vesced, ef·fer·vesc·ing, ef·fer·vesc·es 1. To emit small bubbles of gas, as a carbonated or fermenting liquid. 2. To escape from a liquid as bubbles; bubble up. 3. To show high spirits or animation.
ETYMOLOGY:
Latin effervscere : ex-, up, out; see ex + fervscere, to start boiling, inchoative of fervre, to boil; see bhreu- in Appendix I.