/ Dictionary / Index C clathrin: Meaning and Definition of Find definitions for: clath•rin Pronunciation: (klath'rin), [key] — n. Cell Biol. a basketlike network of protein molecules that forms on the cell membrane in response to the attachment of ligands to receptors and becomes the inside surface of the coated vesicle during endocytosis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. clathrate clatter Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language