/ Dictionary / Index F filarial: Meaning and Definition of Find definitions for: fi•lar•i•al Pronunciation: (fi-lâr'ē-ul), [key] — adj. belonging to the genus Filaria and allied genera of the family Filariidae. pertaining to or noting infection by filariae: filarial disease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: filarial (Thesaurus) filaria filariasis Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language