/ Dictionary / Index C control experiment: Meaning and Definition of Find definitions for: control' exper"iment Pronunciation: [key] an experiment in which the variables are controlled so that the effects of varying one factor at a time may be observed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. control electrode control freak Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language