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.
Count up each pile of pennies to record the number of decayed and undecayed atoms for each half-life.
For the decayed beam, 5 transverse measurements were taken along the depth at 60 locations along the length.
One of the study's authors, Dr Helen Whelton, said: "For every 1,000 15-year-olds in the Republic there are an estimated 2,100 decayed, missing or filled teeth.
The fireball of electron-positron annihilation spat out a particle that promptly decayed into a bottom quark and its antimatter counterpart.
Treatment involves drilling a hole into the centre of the tooth or piercing the gum to relieve the pressure and remove dead or decayed tissue.
In children over 5 years old, nearly 40 percent of tooth surfaces in non-Hispanic black and Mexican American children were decayed, and 40 percent of those had not been filled.
A few drops are then applied to the decayed surface.
As sumarium-146 decayed, it would have produced a relative excess of neodymium-142 in the mantle -- and a matching underabundance in the material that left the mantle, Harper says.
At 20 to 25 feet, they encountered heavily decayed gray slime.
Particularly under the anaerobic conditions, where decomposition was greatest, up to 15 percent of the 1,200-carbon-long molecules gradually decayed into natural, nontoxic 25-carbon waxes -- like those that form naturally on apples, Tempesta notes.