1. Boiling; bubbling; effervescing. 2. Causing to effervesce, as an e. powder. 3. Tending to effervesce when freed from pressure, as an e. solution.
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ef·fer·ves·cent (ef″ər-vesґənt) [L. effervescens] bubbling; sparkling; giving off gas bubbles.Medical dictionary. 2011.