单词 | annihilation |
释义 | annihilationnoun an·ni·hi·la·tion ə-ˌnī-ə-ˈlā-shən plural annihilations 1 : the state or fact of being completely destroyed or obliterated : the act of annihilating something or the state of being annihilated The late 1940s and '50s were so pervaded by a general fear of nuclear annihilation that the era was known as the Age of Anxiety. For a literary culture that fears it is on the brink of total annihilation, we are awfully cavalier about the Great Male Novelists of the last century. … few experts believe that either regime would risk annihilation by actually launching a nuke in anger. The Cretaceous Extinction, whatever its cause, was one of the two most awesome annihilations of life in the history of the world. 2 physics : the combination of a particle and its antiparticle (such as an electron and a positron) that results in the subsequent total conversion of the particles into energy Both the creation and annihilation of antimatter have been observed in nuclear accelerators (atom-smashers). The annihilation reactions are the most efficient sources of energy known, for in them the entire mass of both particles is converted into pure energy. annihilation nounas in destruction the state or fact of being rendered nonexistent, physically unsound, or useless idealists who seek the annihilation of all forms of prejudice Synonyms & Similar Words Relevance
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