Look up: decay

1. 
   Decay
   This is also called site formation. In most oceans (except the Baltic Sea and a few other places), a shipwreck under water deteriorates rapidly during a first stage. This often takes decades for a wooden ship and about a century for a steel ship (shorter time in shallow water). What remains after that is usually stable for millennia if it remains covered by sand, sediment, coral, or other encrustions. A relatively stable wrecksite is usually in no urgent need of excavation, except for the risk of being destroyed by unexpected natural causes or human impact. It is often desirable to leave such a site untouched, saving money for conservation, and saving the site for future archaeologists, that probably will have better methods.
   Found on http://www.abc.se/~pa/uwa/glossary.htm
   
   
2. 
   Decay
   A process in which a particle disappears and in its place different particles appear. The sum of the masses of the produced particles is always less than the mass of the original particle.
   Found on http://hepwww.ph.qmw.ac.uk/epp/glossary.
   
   
3. 
   decay
   The gradual decomposition of dead organic matter.
   Found on http://ppathw3.cals.cornell.edu/glossary
   
   
4. 
   Decay
   Also known as Radioactive Decay . Radioactive substances undergo radioactive decay, the rate of which is determined by the properties of the radionuclide. As decay proceeds the resulting activity of the parent Nuclide reduces and will eventually disappear. The daughter product may be stable (inactive) or may itself be Radioactive and undergo further decay (i.e. as part of a decay series). The rate of decay can be expressed in terms of its Half-Life (the time taken for the activity to reduce by half).
   Found on http://www.ionactive.co.uk/glossary_atoz
   
   
5. 
   decay
   [n] - an inferior state resulting from the process of decaying 2. [n] - the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation 3. [n] - the process of gradually becoming inferior 4. [n] - a gradual decrease 5. [n] - the organic phenomenon of rotting 6. [v] - undergo decay or decomposition 7. [v] - fall into decay or ruin
   Found on http://www.webdictionary.co.uk/definitio
   
   
6. 
   Decay
   This is the doctrine (originally from Ebbinghaus, 1885) that forgetting can be caused by the gradual disappearance of a memory trace over time. That is to say, you forget because your engrams spontaneously become fainter and fainter over time, unless you revisit them occasionally to refresh them. [C
   Found on http://www.smithsrisca.demon.co.uk/memor
   
   
7. 
   Decay
   The process of spontaneous transformation of a radionuclide. The decrease in the activity of a radioactive substance.
   Found on http://www.shponline.co.uk/glossary.asp?
   
   
8. 
   Decay
   one of the four basic stages of an envelope. Refers to the time the sound takes to settle into its sustain level.
   Found on http://www.traditionalmusic.co.uk/music%
   
   
9. 
   Decay
   the period of an envelope during which a sound's attribute (such as volume) stabilizes after the attack has completed. When the sound attribute reaches the end of it's decay, it has reached the sustain period. The progressive reduction in amplitude of a sound or electrical signal over time. In the context of an ADSR envelope shaper, the Decay phase...
   Found on http://www.traditionalmusic.co.uk/music%
   
   
10. 
    Decay
    Disintegration of atomic nuclei resulting in the emission of alpha or beta particles (usually with gamma radiation). Also the exponential decrease in radioactivity of a material as nuclear disintegrations take place and more stable nuclei are formed
    Found on http://www.world-nuclear.org/info/inf51.
    
    
11. 
    Decay
    The decrease in the amount of any radioactive material over time due to the transformation of one nuclide into a different nuclide or into a different energy state of the same nuclide. The decay process results in the emission of nuclear radiation (alpha, beta and gamma) and heat.
    Found on http://www.contractorsunlimited.co.uk/to
    
    
12. 
    Decay
    Change of an element into a different element, usually with some other particle(s) and energy emitted.
    Found on http://www.chemicalglossary.net/definiti
    
    
13. 
    decay
    Change of an element into a different element, usually with some other particle(s) and energy emitted.
    Found on http://www.shodor.org/UNChem/glossary.ht
    
    
14. 
    Decay
    Disintegration of atomic nuclei resulting in the emission of alpha or beta particles (usually with gamma radiation). Also the exponential decrease in radioactivity of a material as nuclear disintegrations take place and more stable nuclei are formed.
    Found on http://www.energy-choices.com/index.php?
    
    
15. 
    Decay
    Decrease in activity of a radioactive substance due to the disintegration of an atomic nucleus resulting in the release of alpha or beta particles or gamma radiation.
    Found on http://www.theiet.org/factfiles/energy/n
    
    
16. 
    decay
    [Nuclear physics] An automatic conversion which is applied to most array-valued expressions in C; they 'decay into' pointer-valued expressions pointing to the array's first element. This term is not used in the official standard for the language. [Jargon File]
    Found on
    
    
17. 
    decay
    the decrease in stored information not caused by erasing or writing Category: Electrical engineering and energy • a term in the activation function of a neural net,that leads to a decrease of activation of a unit if there is no activating input Category: General • Decomposition of wood by fungi and other micro-organisms,resulting in changes of texture and colour. Categor...
    Found on http://www.mijnwoordenboek.nl/definition
    
    
18. 
    Decay
    Disintegration of wood or other substance through the action of fungi.
    Found on http://www.rookinspections.com/glossary/
    
    
19. 
    Decay
    Definition (keystage 3) To get gradually smaller and smaller. For instance, the vibrations in a bell decay for several seconds after it is struck.
    Found on http://thesaurus.maths.org/mmkb/entry.ht
    
    
20. 
    Decay
    De·cay' intransitive verb [ imperfect & past participle Decayed ; present participle & verbal noun Decaying .] [ Old French decaeir , dechaer , decheoir , French déchoir , to decline, fall, become less; Latin de- + cadere to fall. See Chance .] To pass gradually from a sound, prosper ...
    Found on http://www.encyclo.co.uk/webster/D/14
    
    
21. 
    Decay
    De·cay' transitive verb 1. To cause to decay; to impair. [ R.] « Infirmity, that decays the wise.» Shak. 2. To destroy. [ Obsolete] Shak.
    Found on http://www.encyclo.co.uk/webster/D/14
    
    
22. 
    Decay
    De·cay' noun 1. 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 . « Perhaps my God, though he be far before, May ...
    Found on http://www.encyclo.co.uk/webster/D/14
    
    
23. 
    decay
    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. 'Ill fares the land, to hastening ills a prey, Where wealth accumulates and men decay.' (Go ...
    Found on http://www.mondofacto.com/facts/dictiona
    
    
24. 
    decay
    decomposition noun the organic phenomenon of rotting
    Found on http://wordnet.princeton.edu/perl/webwn?
    
    
25. 
    decay
    noun 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`
    Found on http://wordnet.princeton.edu/perl/webwn?