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Related to appressorium: haustoria, tyloses
n. pl. ap·pres·so·ri·a (-sôr′ē-ə)
The flattened tip of a hypha in various species of parasitic fungi, from which a filament emerges that penetrates the host's tissues.
[New Latin appressōrium, from Latin appressus, past participle of apprimere, to press down; see appressed.]
n, pl -ria (-rɪə)
(Botany) botany a flattened hypha of a parasitic fungus that penetrates the host tissues
[from New Latin, from Latin appressus; see appressed]