/ Dictionary / Index P peristalith: Meaning and Definition of Find definitions for: pe•ris•ta•lith Pronunciation: (pu-ris'tl-ith), [key] — n. a group of stones encircling a mound, dolmen, or the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. perissodactyl peristalsis Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language