/ Dictionary / Index M meroplankton: Meaning and Definition of Find definitions for: mer•o•plank•ton Pronunciation: (mer"u-plangk'tun), [key] — n. a floating mass of eggs and larvae of organisms that are nektonic or benthic in their adult stage; temporary plankton. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. meropia Merops Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language