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Definition of random


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ran·dom  audio  (rndm) KEY  

ADJECTIVE:
  1. Having no specific pattern, purpose, or objective: random movements. See Synonyms at chance.
  2. Mathematics & Statistics Of or relating to a type of circumstance or event that is described by a probability distribution.
  3. Of or relating to an event in which all outcomes are equally likely, as in the testing of a blood sample for the presence of a substance.

IDIOM:
at random
Without a governing design, method, or purpose; unsystematically: chose a card at random from the deck.

ETYMOLOGY:
From at random, by chance, at great speed, from Middle English randon, speed, violence, from Old French, from randir, to run, of Germanic origin

OTHER FORMS:
random·ly (Adverb), random·ness (Noun)


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The American Heritage® Dictionary of the English Language, Fourth Edition.
Copyright © 2000 by Houghton Mifflin Company.
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