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buoyancy

[boi-uhn-see, boo-yuhn-see]

Origin

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noun

the power to float or rise in a fluid; relative lightness.

the power of supporting a body so that it floats; upward pressure exerted by the fluid in which a body is immersed.

lightness or resilience of spirit; cheerfulness.

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Also, buoy·ance.

Origin:
1705–15; buoy(ant) + -ancy

Related forms

non·buoy·an·cy, noun

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Buoyancy is always a great word to know.

So is zedonk. Does it mean:

the offspring of a zebra and a donkey.

a chattering or flighty, light-headed person.

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Collins

World English Dictionary

buoyancy (ˈbɔɪənsɪ)

—n
1.	the ability to float in a liquid or to rise in a fluid
2.	the property of a fluid to exert an upward force (upthrust) on a body that is wholly or partly submerged in it
3.	the ability to recover quickly after setbacks; resilience
4.	cheerfulness

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline

Word Origin & History

buoyancy

1713, from buoyant + -cy. Figurative sense (of spirits, etc.) is from 1819.

Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage

Science Dictionary

buoyancy

(boi'ən-sē) Pronunciation Key
The upward force that a fluid exerts on an object that is less dense than itself. Buoyancy allows a boat to float on water and provides lift for balloons.

American Heritage

Cultural Dictionary

buoyancy definition

The force that causes objects to float. According to the principle of Archimedes, when a solid is placed in a fluid (a liquid or a gas), it is subject to an upward force equal in magnitude to the weight of the fluid it has displaced.

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buoyant force float flotage lighter-than-air reserve buoyancy resilience

Matching Quote

"It is a sublime conservatism; as wide as the world, and as unwearied as time; preserving the universe with Asiatic anxiety, in that state in which it appeared to their minds.... Their speculations never venture beyond their own table-lands, though they are high and vast as they. Buoyancy, freedom, flexibility, variety, possibility, which also are qualities of the Unnamed, they deal not with. The undeserved reward is to be earned by an everlasting moral drudgery; the incalculable promise of the morrow is, as it were, weighed. And who will say that their conservatism has not been effectual?"

-Henry David Thoreau

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