/ Dictionary / Index I isothermobath: Meaning and Definition of Find definitions for: i•so•ther•mo•bath Pronunciation: (ī"su-thûr'mu-bath"), [key] — n. a line drawn on a diagram of a vertical section of the ocean connecting all points having equal temperature. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isothermal process isothiocyanate Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language