Meaning

noun the kind of intellectual who converts messages from a code to plain text

noun a machine that converts a coded text into ordinary language

originEtymology tree Proto-Indo-European *de Proto-Indo-European *-h₁ Proto-Indo-European *déh₁ Proto-Italic *dē Latin dē Latin dē-der. English de- English code English decode Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English decoder From decode + -er.

Etymology from Wiktionary, CC BY-SA 3.0