eddy

[ed-ee]
noun, plural eddies.
1.
a current at variance with the main current in a stream of liquid or gas, especially one having a rotary or whirling motion.
2.
a small whirlpool.
3.
any similar current, as of air, dust, or fog.
4.
a current or trend, as of opinion or events, running counter to the main current.
verb (used with object), verb (used without object), eddied, eddying.
5.
to move or whirl in eddies.

Origin:
1425–75; late Middle English; Old English ed- turning + ēa water; akin to Old Norse itha

uneddied, adjective
uneddying, adjective
Dictionary.com Unabridged

Eddy

[ed-ee]
noun
1.
Mary (Morse) Baker (Mrs. Glover; Mrs. Patterson) 1821–1910, U.S. founder of the Christian Science Church.
2.
Also, Eddie. a male given name, form of Edgar or Edward.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
eddy (ˈɛdɪ)
 
n , pl -dies
1.  a movement in a stream of air, water, or other fluid in which the current doubles back on itself causing a miniature whirlwind or whirlpool
2.  a deviation from or disturbance in the main trend of thought, life, etc, esp one that is relatively unimportant
 
vb , -dies, -dies, -dying, -died
3.  to move or cause to move against the main current
 
[C15: probably of Scandinavian origin; compare Old Norse itha; related to Old English ed- again, back, Old High German it-]

Eddy (ˈɛdɪ)
 
n
Mary Baker. 1821--1910, US religious leader; founder of the Christian Science movement (1866)

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

eddy
mid-15c., Scot. ydy, possibly from O.N. iða "whirlpool," and related to the frequent O.E. prefix ed- "again, backwards," cognate of L. re-. Related: Eddied; eddies; eddying.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
eddy   (ěd'ē)  Pronunciation Key 
A current, as of water or air, moving in a direction that is different from that of the main current. Eddies generally involve circular motion; unstable patterns of eddies are often called turbulence. See also vortex.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

eddy

fluid current whose flow direction differs from that of the general flow; the motion of the whole fluid is the net result of the movements of the eddies that compose it. Eddies can transfer much more energy and dissolved matter within the fluid than can molecular diffusion in nonturbulent flow because eddies actually mix together large masses of fluid. Flow composed largely of eddies is called turbulent; eddies generally become more numerous as the fluid flow velocity increases. Energy is constantly transferred from large to small eddies until it is dissipated. (See fluid mechanics.)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences for Eddy
She shares a codependent parasitic existence with her old schoolfriend eddy.
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