1. The process or state of bubbling and fizzing, as when a liquid releases gas
Usage: Usually plural or used as a mass noun in scientific contexts
2. Lively, enthusiastic, or exuberant behavior or expression
Usage: Figurative use; often refers to youthful energy or excitement

Examples

• The effervescences in the beaker indicated a chemical reaction was taking place.
• The champagne's effervescences created a delightful tingling sensation on the tongue.
• Her natural effervescences and cheerful personality made her popular among her peers.
• The effervescences of youth gradually gave way to a more measured demeanor.
• We observed the effervescences as the tablet dissolved in water.
• The band's music captured the effervescences of the 1960s counterculture.