- NEDN
- met. abbr.Naval Environmental Data Network (US)
United dictionary of abbreviations and acronyms. 2015.
NEDN
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Grille (cryptography) — In the history of cryptography, a grille cipher was a technique for encrypting a plaintext by writing it onto a sheet of paper through a pierced sheet (of paper or cardboard or similar). The earliest known description is due to the polymath… … Wikipedia
