Pronunciation: (nô'plē-us), [key]
—pl. -pli•iPronunciation: (-plē-ī"). [key]
(in many crustaceans) a larval form with three pairs of appendages and a single median eye, occurring usually as the first stage of development after leaving the egg.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.