/ Dictionary / Index C control character: Meaning and Definition of Find definitions for: control' char"acter Pronunciation: [key] — Computers. Computers. a character in a data stream that signals the device receiving the data to perform a particular control function, as changing the line spacing on a printer from single to double-spaced. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. control center control chart Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language