decay

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decay

1. decomposition, as of vegetable matter
2. rotten or decayed matter
3. Physics
b. a spontaneous transformation of an elementary particle into two or more different particles
c. of an excited atom or molecule, losing energy by the spontaneous emission of photons
4. Physics a gradual decrease of a stored charge, magnetic flux, current, etc., when the source of energy has been removed
5. Music the fading away of a note

What does it mean when you dream about decay?

Decay may symbolize the degradation of a situation. More positively, it represents the death of an old situation before rebirth into a new state. Other associations come from such common idioms as “rotten apple.” (See also Maggots).

decay

[di′kā]
(geochemistry)
(materials)
To undergo decomposition.
(nuclear physics)
(oceanography)
In ocean-wave studies, the loss of energy from wind-generated ocean waves after they have ceased to be acted on by the wind; this process is accompanied by an increase in length and a decrease in height of the wave.
(physics)
Gradual reduction in the magnitude of a quantity, as of current, magnetic flux, a stored charge, or phosphorescence.

brown rot

A fungus that destroys wood cellulose, leaving a brown powdery residue behind.

decay

[Nuclear physics] An automatic conversion which is applied to most array-valued expressions in C; they "decay into" pointer-valued expressions pointing to the array's first element. This term is not used in the official standard for the language.

decay

The gradual reduction of strength of a signal or charge.
References in periodicals archive ?
In the West Midlands, where water is fluoridated, less than a third of children, 31 per cent, have decayed teeth.
Remove the decayed atoms and place in a second pile.
In North Birmingham, the average five-year-old has 0.7 teeth filled or decayed compared to 3.96 in north Manchester, the worst figure in the country.
An injection of local anaesthetic is often used to numb the area while the decayed parts of the tooth are drilled out, and the cavity is cleaned and filled to stop further decay.
The study showed that in St Helens the average five-year-old has 2 1 / decayed,missing or filled teeth, which puts them well above the average.
The second timber, an obviously decayed railroad bridge beam, was subjected to ultrasonic inspection transverse to the grain.
For example, certain collapsed tabletops had much lower nitrogen-15 concentrations than did the decayed floorboards they rested on.
A US Task Force report in 2002 found average tooth decay reductions between 30% and 50% among children aged 4 to 17, whilst a review published in 2007 showed that adults with lifelong residence in fluoridated areas have between 27% and 35% fewer teeth decayed than those who have always lived in non-fluoridated areas.
The government's overall target is that by 2003 five-year-olds should have on average no more than one decayed, missing or filled tooth, with 70% experiencing no problems.