/ Dictionary / Index T terbutaline: Meaning and Definition of Find definitions for: ter•bu•ta•line Pronunciation: (tur-byt'l-ēn"), [key] — n. Pharm. a selective beta-adrenergic receptor agonist substance, CHNO, used in the treatment of asthma. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ter Borch terce Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language