Decay v. i. : To pass gradually from a sound, prosperous, or perfect state, to one of imperfection, adversity, or dissolution; to waste away; to decline; to fail; to become weak, corrupt, or disintegrated; to rot; to perish; as, a tree decays; fortunes decay; hopes decay.

Decay v. t. : To cause to decay; to impair.

Decay v. t. : To destroy.

Decay n. : Gradual failure of health, strength, soundness, prosperity, or of any species of excellence or perfection; tendency toward dissolution or extinction; corruption; rottenness; decline; deterioration; as, the decay of the body; the decay of virtue; the decay of the Roman empire; a castle in decay.

Decay n. : Destruction; death.

Decay n. : Cause of decay.

Example:
What are the ways to treat Decay in central incisors?

Taxonomy
Decay, free encyclopedia, tooth decay, search, free dictionary, comic book character, decomposition, organic matter, physics, reduction, orbit, computer game, game add-on, proportion, music, drops, sustain level, initial peak.

Defination from the web:
Decay, a computer game add-on. Dental caries, also known as tooth decay. Exponential decay, the decrease ... Retrieved from "http://en.wikipedia.org/wiki/Decay" Categories: Disambiguation pages. Hidden categories: All disambiguation pages | All article disambiguation pages ...