| 单词 | decay |
| 释义 | Word Frequency decay(dɪˈkeɪ) verb 1. to decline or cause to decline gradually in health, prosperity, excellence, etc; deteriorate; waste away 2. to rot or cause to rot as a result of bacterial, fungal, or chemical action; decompose 3. Also: disintegrate (intransitive) physics a. (of an atomic nucleus) to undergo radioactive disintegration b. (of an elementary particle) to transform into two or more different elementary particles 4. (intransitive) physics (of a stored charge, magnetic flux, etc) to decrease gradually when the source of energy has been removed noun 5. the process of decline, as in health, mentality, beauty, etc 6. the state brought about by this process 7. decomposition, as of vegetable matter 8. rotten or decayed matter the dentist drilled out the decay 9. physics a. radioactive decay b. a spontaneous transformation of an elementary particle into two or more different particles c. (of an excited atom or molecule) the losing of energy by the spontaneous emission of photons 10. physics a gradual decrease of a stored charge, magnetic flux, current, etc, when the source of energy has been removed See also time constant 11. music the fading away of a note Derived forms decayable (deˈcayable) adjective Word origin C15: from Old Northern French decaïr, from Late Latin dēcadere, literally: to fall away, from Latin cadere to fall |
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