Look up: activation

1. 
   Activation
   The time-varying value that is the output of a neuron.
   Found on http://mitpress.mit.edu/books/FLAOH/cbnh
   
   
2. 
   activation
   [n] - stimulation of activity in an organism or chemical 2. [n] - making active and effective (as a bomb)
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. 
   Activation
   treatment of a substance by heat, radiation, or activating reagent to produce a more complete or rapid chemical or physical change.
   Found on http://www.chemicalglossary.net/definiti
   
   
4. 
   activation
   The changing of a passive surface of a metal to a chemically active state. Contrast with passivation..
   Found on http://www.bacgroup.com/glossary/glossar
   
   
5. 
   Activation
   A radioactive isotope of an element (e.g., in the steel of a reactor core), which has been created by neutron bombardment.
   Found on http://www.theiet.org/factfiles/energy/n
   
   
6. 
   activation
   function which places a system,or part of a system which may have been in a low power consumption mode during deactivation,into its fully operating mode Category: News-systems and communications • the representation of a procedure created by the invocation of that procedure Category: Automation (includes telecommunications and computers) • process which gives a card the req...
   Found on http://www.mijnwoordenboek.nl/definition
   
   
7. 
   activation
   In presentation software, activation means starting an action by clicking an action button, mouse or pressing a key.
   Found on http://www.stmarys.tlfe.org/subjects/inf
   
   
8. 
   activation
   (of egg) Normally brought about by contact between spermatozoon and egg membrane. Activation is the first stage in development and occurs independently of nuclear fusion. The first observable change is usually the cortical reaction that may involve elevation of the fertilization membrane; the net result is a block to further fusion and thus to polyspermy. In addition to the morphological changes, there are rapid changes in metabolic rate and an i ...
   Found on http://www.mblab.gla.ac.uk/dictionary/
   
   
9. 
   activation
   <radiobiology> Activation occurs when a particle interacts with an atomic nucleus, shifting the nucleus into an unstable state, and causing it to become radioactive. ... In fusion research, where deuterium-tritium is a common fuel mixture, the neutron released when (D + T) combine to form (4He + n) can activate the reactor structure. In this c ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
10. 
    activation
    noun stimulation of activity in an organism or chemical
    Found on http://wordnet.princeton.edu/perl/webwn?
    
    
11. 
    Activation
    `Activation` in science generally refers to the process whereby something is prepared or excited for a subsequent reaction.
    Found on http://en.wikipedia.org/wiki/Activation
    
    
12. 
    activation
    (ak″tĭ-va´shәn) the act or process of rendering active. the transformation of a proenzyme into an active enzyme by the action of a kinase or another enzyme. the process by which the central nervous system is stimulated into activity through the mediation of the reticular activating...
    Found on http://www.mercksource.com/pp/us/cns/cns
    
    
13. 
    activation
    in psychology, the stimulation of the cerebral cortex into a state of general wakefulness, or attention. Activation proceeds from various portions of ... [2 related articles]
    Found on http://www.britannica.com/eb/a-z/a/14
    
    
14. 
    activation
    activation 1. Making active and effective. 2. Stimulation of activity in an organism or chemical. 3. The activity of causing to have energy and to be active. 4. In medicine, the deliberate induction of a pattern of electrical activity in the brain, as in electroencephalography.
    Found on http://www.wordinfo.info/words/index/inf
    
    
15. 
    activation
    
    1. stimulation of activity in an organism or chemical
    2. the activity of causing to have energy and be active
    3. making active and effective (as a bomb)
    
    Found on
    
    
16. 
    activation
    The changing of a passive surface of a metal to a chemically active state. Contrast with passivation.
    Found on http://www.corrosionsource.com/handbook/
    
    
17. 
    activation
    process of inducing radioactivity by irradiation
    Found on http://www.electropedia.org/iev/iev.nsf/
    
    
18. 
    activation
    final process by which electrochemical active components of a cell are brought to functional completion in order to deliver electrical energy NOTE - Activation can consist, for example, of the introduction of electrolyte or liquid or gaseous active materials by pyrotechnic or other means.
    Found on http://www.electropedia.org/iev/iev.nsf/
    
    
19. 
    activation
    the process of inducing radioactivity by irradiation
    Found on http://www.electropedia.org/iev/iev.nsf/