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

[From at random, by chance, at great speed, from Middle English randon, random, speed, violence, surge, from Old French randon, from randir, to run, probably from Frankish *rand, border, margin (as of a field, used as a racecourse); akin to German Rand, edge.]

ran′dom·ly adv.
ran′dom·ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.randomness - (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work; "entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity"
physical property - any property used to characterize matter and energy and their interactions
conformational entropy - entropy calculated from the probability that a state could be reached by chance alone
thermodynamics - the branch of physics concerned with the conversion of different forms of energy
2.randomness - the quality of lacking any predictable order or plan
unregularity, irregularity - not characterized by a fixed principle or rate; at irregular intervals
ergodicity - an attribute of stochastic systems; generally, a system that tends in probability to a limiting form that is independent of the initial conditions
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˈrændəmnɪs] Naleatoriedad f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[ˈrændəmnɪs] ncaractère m aléatoire
the apparent randomness of sth → le caractère apparemment aléatoire de qchrandom number nnombre m aléatoire
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
References in periodicals archive ?
StatNews reported that the results might imply "that preventive efforts from smoking cessation to environmental cleanups were largely pointless." A news story in Science magazine said: "Many scientists took issue with the paper because they felt it overemphasised the randomness of cancer and downplayed the value of trying to prevent it."
And there are some who still believe in fixture-list randomness.
I'm generally a big fan of randomness. Random discounts just for using a particular debit card, randomly cancelled meetings that leave me with spare time to go to the beach, a random 50 dirham note in the glove compartment of my car - never underestimate the impact randomness can have on your day.
Be that as it may, we can premise the situation on two suppositions: a) institutional equilibrium has collapsed at the first sign of collision and what is happening now is a result of random escalation event by excruciating event; b) There is a method to this randomness and this method is rooted in some coordinated intent to 'set things right'.
THANKS to the randomness of Christmas, I didn't see a lot of the things I planned to watch (Little Women; The Miniaturist; Carry On At Your Convenience), but I did see Not Going Out (BBC1, Christmas Eve) twice.
But the most obvious case where randomness is critical is with cryptography, which increasingly underpins the security of our sensitive data.
In addition, we propose a new algorithm utilizing the modified OTP with scrambling factors for data encryption and decryption processes that supports the data confidentiality which satisfies the randomness, diffusion, and confusion tests.
Those following the literature on theological responses to the natural sciences will be aware that there is a small industry of books that has appeared in the last few decades responding to the notions of chance and randomness operative in the evolutionary history of the world.
After a brief overview of the main ideas and topics related to Kolmogorov complexity and algorithmic randomness, Shen, Uspensky, and Vereshchagin discuss topics and results they find most important from both the technical and philosophical perspectives.
These primitives (you can think of them as a physical equivalent of algorithms) are created using a nanomaterial that's cost-efficient and provides the highest possible structural randomness.