/ Dictionary / Index F field-effect transistor: Meaning and Definition of Find definitions for: field'-ef•fect transis"tor Pronunciation: (fēld'i-fekt"), [key] — Electronics. Electronics. a transistor in which the output current is varied by varying the value of an electric field within a region of the device. Abbr.: FET Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. field dependence field emission Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language