Definition of annihilate in English:

annihilate

Line breaks: an¦ni¦hi|late
Pronunciation: /əˈnʌɪɪleɪt
 
/

verb

[with object]
  • 2 Physics Convert (a subatomic particle) into radiant energy: a fraction of the mass of atomic nuclei is annihilated mesons are unstable because the quark and antiquark can annihilate each other
    More example sentences
    • When a particle and antiparticle are brought together they annihilate each other, converting all of their mass and energy into a burst of electromagnetic radiation, and sometimes into other particles.
    • The prefix anti is appropriate because an electron and a positron can annihilate each other, disappearing in a burst of energy.
    • An important proof of the QCD theory is provided by the collisions between electrons and their antiparticles, positrons, with very high kinetic energy, when they annihilate each other.

Derivatives

annihilator

noun
More example sentences
  • The annihilator of the hereditary peers has succumbed to the trade union barons.
  • War is… a destroyer and annihilator, in short, as an evil that strikes all, victor as well as vanquished.
  • By expanding as Lord Siva, the Lord becomes the annihilator of the universe when needed.

Origin

late Middle English (originally as an adjective meaning 'destroyed, annulled'): from late Latin annihilatus 'reduced to nothing', from the verb annihilare, from ad- 'to' + nihil 'nothing'. The sense 'destroy utterly' dates from the mid 16th century.

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