Definition of haustorium in English:


nounplural noun haustoria/hôˈstôrēə/

  • A slender projection from the root of a parasitic plant, such as a dodder, or from the hyphae of a parasitic fungus, enabling the parasite to penetrate the tissues of its host and absorb nutrients from it.

    ‘Parasitic plants can form haustoria within various host tissues, and this has led to convenient, yet unsatisfactory distinctions being made between a ‘shoot parasite’ and a ‘root parasite’.’
    • ‘Cuscuta contains at least 158 species that no longer possess leaves, but their stems twine around host plants producing numerous haustoria to obtain nutrients.’
    • ‘The germinated seedling infects host roots by developing an haustorium that penetrates the host root and serves as a physiological bridge between the two organisms.’
    • ‘Specialized parasitic structures called haustoria are formed within host cells, through which nutrients are drawn from the host.’
    • ‘Mildew hyphae grow on the exterior of the plant and remove nutrients from their host via haustoria sent into epidermal cells.’



/hôˈstôrēəm/ /hɔˈstɔriəm/


Late 19th century modern Latin, from Latin haustor ‘thing that draws in’, from the verb haurire.