/ Dictionary / Index M microplankton: Meaning and Definition of Find definitions for: mi•cro•plank•ton Pronunciation: (mī"krō-plangk'tun), [key] — n. plankton visible as individual organisms only with the aid of a microscope, which excludes most animal plankton. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. micropipette micropore Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language