re activity
ækˈtɪv noun
1.
the quality or condition of being reactive.
2.
Chemistry. the relative capacity of an atom, molecule, or radical to undergo a chemical reaction with another atom, molecule, or compound.
3.
Physics. a measure of the deviation from the condition at which a nuclear reactor is critical.
4.
Immunology. the ability of an antigen to combine with an antibody.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
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Link To re activity
00:10
Re activity
is always a great word to know.
So is callithumpian. Does it mean:
| a fool or simpleton; ninny. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
Collins
World English Dictionary
reactive (rɪˈæktɪv) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —adj | |
| 1. | readily partaking in chemical reactions: sodium is a reactive metal; free radicals are very reactive |
| 2. | of, concerned with, or having a reactance |
| 3. | responsive to stimulus |
| 4. | (of mental illnesses) precipitated by an external cause: reactive depression |
| re'actively | |
| —adv | |
| reactivity | |
| —n | |
| re'activeness | |
| —n | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary
reactivity re·ac·tiv·i·ty (rē'āk-tĭv'ĭ-tē)
n.
The property of reacting.
The process of reacting.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
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