Definition of unpasturable in English:

unpasturable

Pronunciation /(ˌ)ʌnˈpɑːstʃ(ə)rəbl/ /(ˌ)ʌnˈpastʃ(ə)rəbl/

adjective

rare
  • Not pasturable; that cannot be used as pasture.

Origin

Early 17th century. From un- + pasturable.