Annihilate definition

ə-nīə-lāt
To destroy completely; put out of existence; demolish.

An atomic bomb can annihilate a city.

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(physics) To convert (a subatomic particle) to energy or high-energy particles by annihilation.
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To destroy completely.

The naval force was annihilated during the attack.

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To kill.
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To consider or cause to be of no importance or without effect; nullify.

To annihilate another's ambition.

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To reduce to nonexistence.
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To be completely destructive.
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(archaic) To treat as worthless, to vilify.
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The definition of annihilate means to completely destroy.

To bomb a building, murdering all of the inhabitants, is an example of annihilate.

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To defeat decisively.

Annihilated the league champions in the playoffs.

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(physics) To participate in annihilation. Used of particles and antiparticles.
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To reduce to nothing, to destroy, to eradicate.

An atom bomb can annihilate a whole city.

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To conquer decisively; crush.
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Origin of annihilate

  • Late Latin annihilāre annihilāt- Latin ad- ad- Latin nihil nothing ne in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin annihilō (“I reduce to nothing”), from ad (“to”) + nihil (“nothing”).

    From Wiktionary