noun
: a plant species considered to be able to so modify the pathogenicity of a fungus infecting it that the fungus can subsequently infect a plant normally resistant to its attack
noun
: a plant species considered to be able to so modify the pathogenicity of a fungus infecting it that the fungus can subsequently infect a plant normally resistant to its attack
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012