The word "decay" means a breaking down. There are several specific uses:
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Rot and decomposition are words for decay. Another word for tooth decay is cavity. Cavities happen as a result of the production of acid by bacterial fermentation of food debris accumulated on the tooth surface.
Synonyms for the word deteriorate: adulterate, become worse, break, corrode, corrupt, crumble, debase, debilitate, decline, decompose, degrade, deprave, depreciate, descend, disintegrate, fall apart, go downhill, go to pieces, go to pot, impair, injure, languish, lapse, lessen, lose it, lose quality, lower, retrograde, retrogress, sink, spoil, undermine, weaken, wear away, worsen
From my own perspective, decay may be refered to the process of rottening or decomposition of an organism i.e either of plants or animals.
It took its root from the greek word....
Here are some sentences.
Tooth decay can be painful.
The dead plant will decay into soil.
The process by which the nucleus of an unstable atom loses energy by emitting radiation, including alpha particles, beta particles, gamma rays, and conversion electrons.
That depends on the type of decay, alpha and beta decay change the atom into a different element but gamma decay does not.
Francium-223 decay to radium-223; each isotope have another type of decay.
It does not usually involve the atom's electrons, except for a type of decay called K capture. But the beta particles ejected in what is called beta decay are either electrons or positrons.
ernest Rutherford _______________________________________________________________ Radioactive decay was actually discovered in 1896 by Henri Bacquerel. Ernest Rutherford discovered the formula of radioactive decay (Such as the falk-life, differences between alpha and beta decay and even how the elements become new elements after the decay), but he did not discover the radioactive decay himself.