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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.
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


[ˈrændəmnɪs] Naleatoriedad f


[ˈrændəmnɪs] ncaractère m aléatoire
the apparent randomness of sth → le caractère apparemment aléatoire de qchrandom number nnombre m aléatoire
References in periodicals archive ?
But the most obvious case where randomness is critical is with cryptography, which increasingly underpins the security of our sensitive data.
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.
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.
There are countless phenomena in nature that have some kind of randomness attached to them, ranging from the truly random, such as quantum effects, to quasi-random, such chaotic effects that start as predictable phenomena and quickly become totally erratic.
But a new advance on a method known as a randomness extractor makes it easier for machines to roll the dice, generating truly random numbers by harvesting randomness from the environment.
Keywords: Auto-correlation Test, Independence Method, Key Schedule, Poker Test, Randomness, Sub-keys.
To verify the randomness of data distribution, a run test was applied to characterize the spatial and temporal dependence of production (BEAVER et al.
Fooled by Randomness is a non-technical book by Nassim Nicholas Taleb that describes imperfection of human knowledge.
A key challenge of the project was building an understanding of the concept of randomness within the activities in such a way that students could draw meaningful conclusions about populations from small samples.
argues in this bite-size volume that randomness, as opposed to selection, plays an important role in evolution that is commonly underemphasized.
In my new book, I talk a lot about how ant societies exploit randomness and Y[pounds sterling]leaderlessness' to learn and flourish.
Also, "by willfully, maliciously and feloniously conspiring and removing the randomness of the manual audit in gross violation of the requirements under the AES Law, all the respondents, both past and present, including respondent De Villa, interfered and impeded with, as well as prevented the proper use of computer counting devices (the PCOS machines), which affected the processing, generation and transmission of election results, data or information," said the complaint filed by TanDem chair Evelyn Kilayco, its president Teresita Baltazar and Bagumbayan president Leon Herrera.