/ Dictionary / Index P physoclistous: Meaning and Definition of Find definitions for: phy•so•clis•tous Pronunciation: (fī"su-klis'tus), [key] — adj. Ichthyol. having the air bladder closed off from the mouth. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. physo- physogastric Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language