/ Dictionary / Index R read-only: Meaning and Definition of Find definitions for: read-on•ly Pronunciation: (rēd'ōn'lē), [key] — adj. Computers. of or pertaining to files or memory that can be read but cannot normally be changed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. readjustment read-only memory Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language