/ Dictionary / Index A attenuator: Meaning and Definition of Find definitions for: at•ten•u•a•tor Pronunciation: (u-ten'y-ā"tur), [key] — n. Electronics. a device for decreasing the amplitude of an electronic signal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: attenuator (Thesaurus) attenuation attest Related Content Daily Word Quiz: ounterfeit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language