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random

 [ran´dum]
pertaining to a chance-dependent process.

ran·dom

(ran'dŏm),
1. Governed by chance; used of a process in which the outcome is indeterminate but may assume any of a set of values (the domain) with probabilities specifiable in advance. Although the random process is widely used in probability theory, empiric justification for the term is more complicated. The minimum requirement is that repeated realization of the process will settle down to a stable distribution or, if not metric, a stable set of frequencies if the trait is classifiable only.
2.
[M.E. randon, speed, errancy, fr. O. Fr. randir, to run, fr. Germanic]

random

/ran·dom/ (ran´dom) pertaining to a chance-dependent process, particularly one that occurs according to a known probability distribution.

random

Occurring by chance alone–ie, not by design, pattern, plan, or selection Clinical trials Referring to a formal chance process in which previous events have no bearing on future events. See Random allocation, Randomized trial.

ran·dom

(ran'dŏm)
Governed by chance; denotes a process in which outcome is indeterminate.
[M.E. randon, speed, errancy, fr. O. Fr. randir, to run, fr. Germanic]

random

unplanned, without direction or purpose.

random assignment
random mating
where each member of the population has an equal opportunity of mating with every member of the opposite sex.
random numbers
a list of numbers obtained by a standard randomization procedure; used commonly to select individual animals from a pack.
random sample
see random sample.
random sampling
a procedure for selecting units from a group in such a way that each unit has an equal chance of being selected in the sample.
random selection
selection in such a way as to produce a random sample.
random variable
a group or quantity that takes various values, each with varying probabilities.
References in classic literature ?
She chose for herself a volume at random, submitted it to her uncle, who, seeing that it was
Let's go in that direction," pointing a finger at random.
It certainly is not a name that one would apply to a man at random, with a probability that it would be right.
Maston, and the delegates of the Gun Club were mounted on the bridge, examining this object straying at random on the waves.
But, strange to say, although she had so made up her mind not to be influenced by her father's views, not to let him into her inmost sanctuary, she felt that the heavenly image of Madame Stahl, which she had carried for a whole month in her heart, had vanished, never to return, just as the fantastic figure made up of some clothes thrown down at random vanishes when one sees that it is only some garment lying there.
The great Cuff showed a wonderful patience; trying his luck drearily this way and that way, and firing shot after shot, as it were, at random, on the chance of hitting the mark.
On such occasions he would start up, quaff a cup of wine as if to raise his spirits, and then mingle in the conversation by some observation made abruptly or at random.