random number

Short definition from Wiktionary

Noun

1. 1
   Used other than figuratively or idiomatically: see random, number.
2. 2
   A number allotted randomly using suitable generator (electronic machine or as simple "generator" as die).
3. 3
   A number selected based on a uniform distribution, typically using a suitable generator (for example, rolling a die).
4. 4
   A pseudorandom number.