释义 |
decay /di-kāˈ/ intransitive verb- To fall away from a state of health or excellence
- To waste away
- To decompose, rot
- (of eg magnetism, radioactivity) to decrease in strength as the source of energy is removed
transitive verb- To cause to waste away
- To impair
noun- A falling into a worse or less perfect state
- A wearing away
- Rotting
- Bad or rotten matter (eg in a tooth)
- Loss of fortune
- Ruin, downfall (obsolete)
- Disintegration of a radioactive substance
ORIGIN: OFr decair, from L dē from, and cadere to fall decayedˈ adjective - Rotten
- Reduced in circumstances, impoverished
decay heat noun (nuclear eng) The heat produced by the radioactive decay of fission products formed in a nuclear reactor |