buoyancy meaning and definition

BUOYANCY noun

Definition of buoyancy (noun)

1. cheerfulness that bubbles to the surface
   • synonyms: perkiness
2. the property of something weightless and insubstantial
   • synonyms: airiness
3. the tendency to float in water or other liquid
4. irrepressible liveliness and good spirit
   • "I admired his buoyancy and persistent good humor"
   • synonyms: irrepressibility