/ Dictionary / Index P pentastich: Meaning and Definition of Find definitions for: pen•ta•stich Pronunciation: (pen'tu-stik"), [key] — n. Pros. a strophe, stanza, or poem consisting of five lines or verses. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pentarchy pentastomid Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language