an·ni·hi·late

[uh-nahy-uh-leyt]
verb (used with object), an·ni·hi·lat·ed, an·ni·hi·lat·ing.
1.
to reduce to utter ruin or nonexistence; destroy utterly: The heavy bombing almost annihilated the city.
2.
to destroy the collective existence or main body of; wipe out: to annihilate an army.
3.
to annul; make void: to annihilate a law.
4.
to cancel the effect of; nullify.
5.
to defeat completely; vanquish: Our basketball team annihilated the visiting team.

Origin:
1350–1400; Middle English adnichilat(e) destroyed < Late Latin annihilātus brought to nothing, annihilated (past participle of annihilāre) (Latin an- an-2 + nihil nothing + -ātus -ate1)

an·ni·hi·la·tive [uh-nahy-uh-ley-tiv, uh-luh] , an·ni·hi·la·to·ry [uh-nahy-uh-luh-tawr-ee, ‐tohr-ee] , adjective
un·an·ni·hi·lat·ed, adjective
un·an·ni·hi·la·tive, adjective
un·an·ni·hi·la·to·ry, adjective


1. ravage, devastate, desolate. 1, 2. smash, obliterate, demolish.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
annihilate (əˈnaɪəˌleɪt) [Click for IPA pronunciation guide]
 
vb
1.  (tr) to destroy completely; extinguish
2.  informal (tr) to defeat totally, as in debate or argument
3.  (intr) physics to undergo annihilation
 
[C16: from Late Latin annihilāre to bring to nothing, from Latin nihil nothing]
 
annihilable
 
adj
 
an'nihilative
 
adj
 
an'nihilator
 
n

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

annihilate
1520s, from an obsolete adj. meaning "reduced to nothing" (late 14c.), originally the pp. of a verb, anihil, from O.Fr. annichiler, from L.L. annihilare "to reduce to nothing," from L. ad- "to" + nihil "nothing" (see nil).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Not only do these beauties annihilate glare, they also minimize fog-ups, thanks
  to a series of large vents around the lens.
Each seemed obsessed with but a single thought: to annihilate the other before
  the other annihilated him.
As every schoolboy knows, if you bring a particle and an antiparticle together,
  they annihilate each other in a burst of energy.
Each of the great powers now has enough nuclear weapons to annihilate the human
  race many times over.
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