- Decay is defined as rotted matter or the state of rotting, deteriorating or declining.
An example of decay is what has happened to an old abandoned building.
- To decay is defined as to rot, lose strength or deteriorate.
- An example of decay is when old fruit begins to rot.
- An example of decay is when a neighborhood starts to become crime-ridden.
An apple in an advanced state of decay.
decay definition by Webster's New World
- to lose strength, soundness, health, beauty, prosperity, etc. gradually; waste away; deteriorate
- to rot or decompose
- to undergo radioactive disintegration spontaneously
Origin: Middle English decaien ; from Anglo-French and amp; Old French decäir ; from Vulgar Latin an unverified form decadere: see decadence
- a gradual decline; deterioration
- a wasting away
- a rotting or decomposing, as of vegetable matter
- decayed or rotted matter
- the spontaneous disintegration of radioactive atoms with a resulting decrease in their number
- the spontaneous disintegration of a particle or nucleus, as a meson, baryon, etc., as it changes into a more stable state
decay definition by American Heritage Dictionary
verb de·cayed, de·cay·ing, de·cays verb, intransitive
- Biology To break down into component parts; rot.
- Physics To disintegrate or diminish by radioactive decay.
- Electronics To decrease gradually in magnitude. Used of voltage or current.
- Aerospace To decrease in orbit. Used of an artificial satellite.
- To fall into ruin: a civilization that had begun to decay.
- Pathology To decline in health or vigor; waste away.
- To decline from a state of normality, excellence, or prosperity; deteriorate.
- a. The destruction or decomposition of organic matter as a result of bacterial or fungal action; rot.b. Rotted matter.
- Physics Radioactive decay.
- Aerospace The decrease in orbital altitude of an artificial satellite as a result of conditions such as atmospheric drag.
- A gradual deterioration to an inferior state: tooth decay; urban decay.
- A falling into ruin.
Origin: Middle English decayen, from Old French decair, from Vulgar Latin *dēcadere : Latin dē-, de- + Latin cadere, to fall; see kad- in Indo-European roots.
- de·cayˈer noun
decay - Computer Definition
The reduction of strength of a signal or charge.
decay - Medical Definition
- The destruction or decomposition of organic matter as a result of bacterial or fungal action; rot.
- Dental caries.
- The loss of information that was registered by the senses and processed into the short-term memory system.
- Radioactive decay.
- To break down into component parts; rot.
- To disintegrate or diminish by radioactive decay.
- To decline in health or vigor; waste away.
decay - Science Definition
- The breaking down or rotting of organic matter through the action of bacteria, fungi, or other organisms; decomposition.
- The spontaneous transformation of a relatively unstable particle into a set of new particles. For example, a pion decays spontaneously into a muon and an antineutrino. The decay of heavy or unstable atomic nuclei (such as uranium or carbon-10) into more stable nuclei and emitted particles is called radioactive decay . The study of particle decay is fundamental to subatomic physics. See more at fundamental force, radioactive decay.