#1 decay v. [disintegrate, decompose] lose a stored charge, magnetic flux, or current; "the particles disintegrated during the nuclear fission process". wn
#2 decay n. the process of gradually becoming inferior. wn
#3 decay n. [decline] a gradual decrease; as of stored charge or current. wn
#4 decay v. [crumble, dilapidate] fall into decay or ruin; "The unoccupied house started to decay". wn
#5 decay n. [decomposition] the organic phenomenon of rotting. wn
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