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Definition of precaution - 3 dictionary results

pre⋅cau⋅tion

[pri-kaw-shuhn]
–noun
1. a measure taken in advance to avert possible evil or to secure good results.
2. caution employed beforehand; prudent foresight.
–verb (used with object)
3. to forewarn; put on guard.

Origin:
1595–1605; < LL praecautiōn- (s. of praecautiō). See pre-, caution


2. forethought, prudence, circumspection.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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pre·cau·tion   (prĭ-kô'shən)   
n.  
  1. An action taken in advance to protect against possible danger, failure, or injury; a safeguard: followed safety precautions when using heavy machinery.

  2. Caution practiced in advance; forethought or circumspection: a need for precaution when planning a vacation.


[Late Latin praecautiō, praecautiōn-, from praecautus, past participle of Latin praecavēre, to guard against : prae-, pre- + cavēre, to beware.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

precaution 
1603, from Fr. précaution (16c.), from L.L. præcautionem (nom. præcautio), from L. præcautus, pp. of præcavere "to guard against beforehand," from præ + cavere "to be one's own guard" (see caution).
Online Etymology Dictionary, © 2001 Douglas Harper
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