Definition of annihilation in English:

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Pronunciation: /ənʌɪɪˈleɪʃ(ə)n/


[mass noun]
1Complete destruction or obliteration: the threat of global annihilation
More example sentences
  • The threat of global annihilation has so colored the debate that for many people it is considered an axiomatic truth that the use of such weaponry can never be justified.
  • Ground Zero subsequently became a term to describe the point directly below a nuclear explosion - where destruction is total and annihilation of all life is complete.
  • This is something entirely between the United States government and those regimes who dislike freedom, who really develop weapons of mass destruction for mass annihilation.
1.1Total defeat: a show of independence is its only hope of avoiding annihilation in next year’s elections
More example sentences
  • But all said and done, if the NDP hopes to avoid electoral annihilation it would do well to opt for Mr. Nystrom.
  • They have argued that the Conservative Party faces, if not annihilation, something near to total disaster.
  • As the world-at-large clearly knows now, the thirtieth America's Cup defense 2000 was a total annihilation of the Italian Prada Challenge by defenders Team New Zealand.
2 Physics The conversion of matter into energy, especially the mutual conversion of a particle and an antiparticle into electromagnetic radiation.
Example sentences
  • Ultimately, for travel to distant star systems, the tremendous energy available in particle annihilation will be applied in propulsion.
  • The lead plates convert a small fraction of the incident annihilation photons into electrons while the wire chambers determine the position of the charge.
  • By measuring the time between the pulse and the photon flash of electron-positron annihilation the team was able to map the defect regions.


Mid 16th century: from late Latin annihilatio(n-), from the verb annihilare (see annihilate).

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