/ Dictionary / Index P pantothere: Meaning and Definition of Find definitions for: pan•to•there Pronunciation: (pan'tu-thēr"), [key] — n. any animal of the extinct order Pantotheria that lived during the late Mesozoic Era, believed to be the ancestor of the marsupial and placental mammals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pantothenic acid pantoum Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language