spot check

noun
a random sampling or quick sample investigation: A spot check showed that at least ten percent of the items were defective.

Origin:
1940–45

Dictionary.com Unabridged

spot-check

[spot-chek]
verb (used with object)
1.
to examine or investigate by means of a spot check.
verb (used without object)
2.
to conduct a spot check.

Origin:
1940–45

spot-checker, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To spot-check
Collins
World English Dictionary
spot check
 
n
1.  a quick random examination
2.  a check made without prior warning
 
vb
3.  (tr) to perform a spot check on

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
Please spot-check stores for effectiveness of the recall.
Please spot-check establishments for the effectiveness of the recall.
Synonyms
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