reactivity

[ree-ak-tiv-i-tee]
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.

Origin:
1885–90; reactive + -ity

hyperreactivity, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To reactivity
Collins
World English Dictionary
reactive (rɪˈæktɪv)
 
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
Cite This Source
American Heritage
Medical Dictionary

reactivity re·ac·tiv·i·ty (rē'āk-tĭv'ĭ-tē)
n.

  1. The property of reacting.

  2. The process of reacting.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Example sentences
The mutant proteins were then purified to ensure that reactivity and side
  effects of the vaccine were minimized.
And this, in turn, suggests that anxiety results from a learning disorder
  rather than a reactivity disorder.
The second requirement needs to be that the system has a negative reactivity
  coefficient.
Previous research indicates that oxytocin plays a role in regulating stress and
  fear reactivity.
Related Words
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature