IPA: /ˈbɔɪənsi/
KK: /ˈbɔɪənsi/
The ability of an object to float in a liquid or rise in a gas due to an upward force from the fluid.
The buoyancy of the boat allowed it to stay afloat even in rough waters.
Buoyancy is derived from the word 'buoyant' (from the Old French 'boiant', meaning to float) and the suffix '-cy' (meaning the state or condition of). The term 'buoyancy' refers to the state or condition of being able to float or rise in a fluid.
Think of the word 'buoyant' which means able to float, and remember that 'buoyancy' describes the condition of being able to float.