/ Dictionary / Index T trehala: Meaning and Definition of Find definitions for: tre•ha•la Pronunciation: (tri-hä'lu), [key] — n. an edible, sugary substance secreted by certain Asiatic beetles of the genus Larinus, forming their pupal covering. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trefoil knot trehalose Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language