/ Dictionary / Index L lipoprotein: Meaning and Definition of Find definitions for: lip•o•pro•tein Pronunciation: (lip"u-prō'tēn, -tē-in, lī"pu-), [key] — n. Biochem. any of the class of proteins that contain a lipid combined with a simple protein. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lipoprotein (Thesaurus) lipopolysaccharide liposome Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language