competent
Definition: (adjective) having the skill and knowledge needed for a particular task; capable
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re·ac·tion
 (r  -  k  sh  n)
KEY
NOUN:
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- A response to a stimulus.
- The state resulting from such a response.
- A reverse or opposing action.
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- A tendency to revert to a former state.
- Opposition to progress or liberalism; extreme conservatism.
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Chemistry
A change or transformation in which a substance decomposes, combines with other substances, or interchanges constituents with other substances.
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Physics
A nuclear reaction.
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Physics
An equal and opposite force exerted by a body against a force acting upon it.
- The response of cells or tissues to an antigen, as in a test for immunization.
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