/ Dictionary / Index F fresnel: Meaning and Definition of Find definitions for: fres•nel Pronunciation: (fru-nel', Fr. frā-nel'), [key] — n. a unit of frequency, equal to 10 cycles per second. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fresnel (Thesaurus) freshwater drum Fresnel biprism Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language