phytochemistry

from WordNet (r) 3.0 (2006)

phytochemistry
    n 1: the branch of organic chemistry dealing with the chemistry
         of plants

from The Collaborative International Dictionary of English v.0.48

Phytochemistry \Phy"to*chem"is*try\, n. [Phyto- + chemistry.]
   Chemistry in its relation to vegetable bodies; vegetable
   chemistry. --R. Hunt.
   [1913 Webster]