/ Dictionary / Index P plaintext: Meaning and Definition of Find definitions for: plain•text Pronunciation: (plān'tekst"), [key] — n. the intelligible original message of a cryptogram, as opposed to the coded or enciphered version. Also calledCf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. plain table plaintiff Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language