zymogenetichttp://www.oed.com/dictionary/zymogenetic_adj%3Ftab%3Dmeaning_and_usezymogenetic, adj.
First published 1921; not fully revised

zymogeneticadjective

Biochemistry.
  1. 1896–
    Stressed as zymogeˈnetic.
    1. 1896
      Organisms..acting partly as ferments, partly as zymogenetic cells.
      T. C. Allbutt et al., System of Medicine vol. I. 528

Originally published as part of the entry for zymogen, n.

zymogen, n. was first published in 1921; not fully revised.