vegetative /ˈvɛd͡ʒəteɪtɪv/ adjective4 •Of or relating to plants; especially to their growth. •Of a state of impaired brain function, where a person can respond to some stimuli but is incapable of voluntary acts. •Of or relating to functions such as growth, nutrition and asexual reproduction rather than sexual reproduction.In Lejeuneaceae vegetative branches normally originate from the basiscopic basal portion of a lateral segment half, as in the Radulaceae, and the associated leaves, therefore, are quite unmodified. — 1992 •Physically inactive. formsmore vegetative · most vegetative