/ Dictionary / Index P pontine: Meaning and Definition of Find definitions for: pon•tine Pronunciation: (pon'tīn, -tēn), [key] — adj. Anat. of or pertaining to the pons. Pon•tine Pronunciation: (pon'tēn, -tīn), [key] — adj. of or pertaining to the Pontine Marshes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pontil Pontine Marshes Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language