A slightly archaic term for a computer-generated Random Number. The prefix pseudo- is used to distinguish this type of number from a ``truly'' Random Number generated by a random physical process such as radioactive decay.
See also Random Number
References
Luby, M. Pseudorandomness and Cryptographic Applications. Princeton, NJ: Princeton University Press, 1996.
Press, W. H.; Flannery, B. P.; Teukolsky, S. A.; and Vetterling, W. T.
Numerical Recipes in FORTRAN: The Art of Scientific Computing, 2nd ed. Cambridge, England: Cambridge
University Press, p. 266, 1992.