verb (used without object)
to become decomposed; rot:
vegetation that was decaying.
to decline in excellence, prosperity, health, etc.; deteriorate.
Physics. (of a radioactive nucleus) to change spontaneously into one or more different nuclei in a process in which atomic particles, as alpha particles, are emitted from the nucleus, electrons are captured or lost, or fission takes place.
verb (used with object)
to cause to decay or decompose; rot:
The dampness of the climate decayed the books.
Decay made the wood unsuitable for use.
a gradual falling into an inferior condition; progressive decline:
the decay of international relations; the decay of the Aztec civilizations.
decline in or loss of strength, health, intellect, etc.:
His mental decay is distressing.
Also called disintegration, radioactive decay. Physics. a radioactive process in which a nucleus undergoes spontaneous transformation into one or more different nuclei and simultaneously emits radiation, loses electrons, or undergoes fission.
Aerospace. the progressive, accelerating reduction in orbital parameters, particularly apogee and perigee, of a spacecraft due to atmospheric drag.
to decline or cause to decline gradually in health, prosperity, excellence, etc; deteriorate; waste away
to rot or cause to rot as a result of bacterial, fungal, or chemical action; decompose
(intransitive) (physics) Also disintegrate
(intransitive) (physics) (of a stored charge, magnetic flux, etc) to decrease gradually when the source of energy has been removed
the process of decline, as in health, mentality, beauty, etc
the state brought about by this process
decomposition, as of vegetable matter
rotten or decayed matter: the dentist drilled out the decay
(physics) a gradual decrease of a stored charge, magnetic flux, current, etc, when the source of energy has been removed See also time constant
(music) the fading away of a note
late 15c., “to decrease,” from Anglo-French decair, Old North French decair (Old French decheoir, 12c., Modern French déchoir) “to fall, set (of the sun), weaken, decline, decay,” from Vulgar Latin *decadere “to fall off,” from de- (see de-) + Latin cadere “to fall” (see case (n.1)). Meaning “decline, deteriorate” is c.1500; that of “to decompose, rot” is from 1570s. Related: Decayed; decaying.
mid-15c., “deterioration, decline in value,” from decay (v.). Meaning “gradual decrease in radioactivity” is from 1897.
decay de·cay (dĭ-kā’)
v. de·cayed, de·cay·ing, de·cays
Verb To undergo decay.
[dih-sep-shuh n] /dɪˈsɛp ʃən/ noun 1. the act of ; the state of being . 2. something that or is intended to ; fraud; artifice. /dɪˈsɛpʃən/ noun 1. the act of deceiving or the state of being deceived 2. something that deceives; trick n. early 15c., from Middle French déception (13c., decepcion) or directly from […]
[dih-sep-tiv] /dɪˈsɛp tɪv/ adjective 1. apt or tending to : The enemy’s peaceful overtures may be deceptive. 2. perceptually misleading: It looks like a curved line, but it’s deceptive. /dɪˈsɛptɪv/ adjective 1. likely or designed to deceive; misleading: appearances can be deceptive 2. (music) (of a cadence) another word for interrupted (sense 3) adj. 1610s, […]
[dih-sij-oo-uh s] /dɪˈsɪdʒ u əs/ adjective 1. shedding the leaves annually, as certain trees and shrubs. 2. falling off or shed at a particular season, stage of growth, etc., as leaves, horns, or teeth. 3. not permanent; transitory. /dɪˈsɪdjʊəs/ adjective 1. (of trees and shrubs) shedding all leaves annually at the end of the growing […]
[dih-sizh-uh n] /dɪˈsɪʒ ən/ noun 1. the act or process of ; determination, as of a question or doubt, by making a judgment: They must make a decision between these two contestants. 2. the act of or need for making up one’s mind: This is a difficult decision. 3. something that is ; resolution: She […]