buoyancy

[ˈbɔɪənsi]

buoyancy Definition

• 1. the ability or tendency of something to float in water or air or some other fluid
• 2. cheerfulness or a lighthearted attitude

Using buoyancy: Examples

Take a moment to familiarize yourself with how "buoyancy" can be used in various situations through the following examples!

• Example

  The buoyancy of the life jacket kept him afloat.

• Example

  The buoyancy of the helium balloon made it rise into the sky.

• Example

  The buoyancy of her spirit was infectious and lifted the mood of everyone around her.

buoyancy Synonyms and Antonyms

Synonyms for buoyancy

• floatability
• flotation
• lightness
• levity
• optimism

Antonyms for buoyancy

• heaviness
• sinking
• pessimism

Phrases with buoyancy

• positive buoyancy

  when an object is able to float on its own in a fluid

  Example

  The submarine has positive buoyancy, meaning it will float to the surface if not weighed down.

• negative buoyancy

  when an object sinks in a fluid

  Example

  The anchor has negative buoyancy, meaning it will sink to the bottom of the ocean.

• buoyancy aid

  a device designed to help someone float in water

  Example

  She put on her buoyancy aid before jumping into the river.

Origins of buoyancy

from French 'bouyance', from bouée 'buoy'

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Summary: buoyancy in Brief

Buoyancy [ˈbɔɪənsi] refers to the ability of an object to float in a fluid, such as water or air. It can also refer to a cheerful or optimistic attitude. Examples include 'The buoyancy of the helium balloon made it rise into the sky.' and 'The buoyancy of her spirit was infectious and lifted the mood of everyone around her.' Phrases include 'positive buoyancy,' 'negative buoyancy,' and 'buoyancy aid.'