Plain-text meaning

See plaintext.

Data comprising standard characters (e.g., letters, numbers, and punctuation marks), with no formatting codes. Such unformatted text usually is coded according to the ASCII standard, which adequately represents the characters and symbols used to form the words used in most spoken languages and which, therefore, lends itself to text-to-speech (TTS) conversion. See also ASCII, data, rich text, and TTS.

(cryptography) Not encrypted text; text that is readable.

(computing) Data which consists only of human-readable text, as opposed to machine-readable binary data or formatting markup.