decay -
the process of gradually becoming inferior
natural action,
natural process,
activity,
action a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
corruption inducement (as of a public official) by improper means (as bribery) to violate duty (as by commiting a felony); "he was held on charges of corruption and racketeering"
nuclear reaction (physics) a process that alters the energy or structure or composition of atomic nuclei
alpha decay radioactive decay of an atomic nucleus that is accompanied by the emission of an alpha particle
decay -
an inferior state resulting from the process of decaying; "the corpse was in an advanced state of decay"; "the house had fallen into a serious state of decay and disrepair"
unsoundness not mentally or physically healthy; "no one can be a poet without a certain unsoundness of mind"
putrefaction,
rot a state of decay usually accompanied by an offensive odor
change undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night"
deteriorate become worse or disintegrate; "His mind deteriorated"
corrode,
rust become destroyed by water, air, or a corrosive such as an acid; "The metal corroded"; "The pipes rusted"
weather change under the action or influence of the weather; "A weathered old hut"
decay -
undergo decay or decomposition; "The body started to decay and needed to be cremated"
change undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night"