pseu·​do·​ran·​dom ˌsü-dō-ˈran-dəm How to pronounce pseudorandom (audio)
: being or involving entities (such as numbers) that are selected by a definite computational process but that satisfy one or more standard tests for statistical randomness

Example Sentences

Recent Examples on the Web Its movements are pseudorandom, controlled by a central pattern generator receiving input from a variety of environmental sensors. Evan Ackerman, IEEE Spectrum, 16 Jan. 2023 That won’t make any detectable difference to the end user, assuming the end user can’t distinguish the pseudorandom numbers from truly random ones. Lance Eliot, Forbes, 18 Dec. 2022 Every 12 seconds, a pseudorandom number generator selects a subset of stakers to form a committee to decide on the next block. Timothy B. Lee, Ars Technica, 19 Aug. 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'pseudorandom.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1949, in the meaning defined above

Time Traveler
The first known use of pseudorandom was in 1949

Dictionary Entries Near pseudorandom

Cite this Entry

“Pseudorandom.” Dictionary, Merriam-Webster, Accessed 2 Apr. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

A Good Old-Fashioned Quiz

Name That Thing

You know what it looks like… but what is it called?

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?