/ Dictionary / Index O orthostichy: Meaning and Definition of Find definitions for: or•thos•ti•chy Pronunciation: (ôr-thos'ti-kē), [key] — pl. -chies. a vertical rank or row. an arrangement of members, as leaves, at different heights on an axis so that their median planes coincide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. orthostatic hypotension orthostyle Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language