"The dissection of plants; plant anatomy", Mid 19th cent.; earliest use found in Robley Dunglison (1798–1869), physician and medical writer. From phyto- + -tomy, after anatomy. Compare German Phytotomie, Swedish fyto-tomi. Compare also post-classical Latin phytotomica, noun.[phytotomy etymology, phytotomy origin, 英语词源]