/ Dictionary / Index L leptocephalus: Meaning and Definition of Find definitions for: lep•to•ceph•a•lus Pronunciation: (lep"tu-sef'u-lus), [key] — pl. -li a colorless, transparent, flattened larva, esp. of certain eels and ocean fishes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: leptocephalus (Thesaurus) lepto leptodactylous Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language