noun
1. : a plant regulator (as indoleacetic acid or ethylene) produced by plants that usually moves within the plant from the site of production to the site of action — called also phytohormone
2. : a synthetic plant regulator
noun
1. : a plant regulator (as indoleacetic acid or ethylene) produced by plants that usually moves within the plant from the site of production to the site of action — called also phytohormone
2. : a synthetic plant regulator
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012