one-time pad

noun

: a random-number additive or mixed keying sequence to be used for a single coded message and then destroyed

Word History

Etymology

probably from its original form's being a pad of keys whose sheets were torn off and discarded after a single use

First Known Use

1953, in the meaning defined above

Time Traveler
The first known use of one-time pad was in 1953

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Dictionary Entries Near one-time pad

onetime

one-time pad

one-timer

See More Nearby Entries 

Cite this Entry

“One-time pad.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/one-time%20pad. Accessed 28 Nov. 2024.

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