Definition of necrogenous in English:

necrogenous

Pronunciation /nɪˈkrɒdʒɪnəs/

adjective

rare Botany
  • Designating a reaction to a plant pathogen in which there is necrosis of the cells surrounding the site of infection, isolating the pathogen and preventing its further spread.

Origin

Mid 19th century (in an earlier sense). From necro- + -genous.