key letter

noun

Definition of key letter

: a letter (as a letter of a repeated key word) functioning as an element in a cryptographic keying sequence

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Dictionary Entries Near key letter

keyless watch

key letter

key light

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Cite this Entry

“Key letter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/key%20letter. Accessed 27 Sep. 2021.

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