/ Dictionary / Index F fucoid: Meaning and Definition of Find definitions for: fu•coid Pronunciation: (fy'koid), [key] — adj. resembling or related to seaweeds of the genus Fucus. —n. a fucoid seaweed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fucoid (Thesaurus) fuckup fucus 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