/ Dictionary / Index L lobulus: Meaning and Definition of Find definitions for: lob•u•lus Pronunciation: (lob'yu-lus), [key] — pl. -li a lobule. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lobule lobus Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language