/ Dictionary / Index N nanoplankton: Meaning and Definition of Find definitions for: nan•o•plank•ton Pronunciation: (nan"u-plangk'tun, nā"nu-), [key] — n. nannoplankton. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nanomole nanosecond Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language