zymophorehttp://www.oed.com/dictionary/zymophore_adj%3Ftab%3Dmeaning_and_usezymophore, adj.
First published 1921; not fully revised

zymophoreadjective

  1. 1900–
    In Ehrlich's theory of immunization, applied to a particular group of atoms in a ferment, or in the receptors of a living cell, to which the fermentative action is due (analogous to the toxophore group in a toxin).
    Stressed as ˈzymophore.
    1. 1900
      The hypothesis of Morgenroth in regard to the existence of a haptophore group and the [sic; ? a] zymophore group in the labile ferment has been recently verified by Myers and Bashford, who have discovered zymoids analogous to the toxoids.
      U.S. Department of Agric. Bureau Anim. India 257 (Cent. Dict. Supplement)

Originally published as part of the entry for zymo-, comb. form

zymo-, comb. form was first published in 1921; not fully revised.