/ Dictionary / Index T tubule: Meaning and Definition of Find definitions for: tu•bule Pronunciation: (t'byl, ty'-), [key] — n. a small tube; a minute tubular structure. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tubule (Thesaurus) tubulate tubuliflorous Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language