/ Dictionary / Index N nereid: Meaning and Definition of Find definitions for: ne•re•id Pronunciation: (nēr'ē-id), [key] — n. any elongate cylindrical worm of the polychaete family Nereididae, including clamworms. —adj. of or pertaining to the family Nereididae. Ne•re•id Pronunciation: (nēr'ē-id), [key] — n. (sometimes l.c.)any of the 50 daughters of Nereus; a sea nymph. a moon of the planet Neptune. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nereid (Thesaurus) nerdy Nereus Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language