haustorium noun. [hɔ:'stɔ:rɪǝm] Pl. -ia [-ɪǝ]. L19.
[from Latin haustor agent-noun from haurire to draw, to drain: see -ORIUM.]
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.

■ haustorial adjective of or pertaining to a haustorium M20.

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