noun phy·toph·tho·ra \fīˈtäfthərə\

Definition of phytophthora

  1. 1 capitalized :  a genus of destructive parasitic fungi (family Pythiaceae) having conidia that usually act as sporangia especially under moist cool conditions and sporangiophores that are simple or branched — see late blight, pythiacystis

  2. 2 plural -s a :  any fungus of the genus Phytophthora b :  a disease (as late blight) caused by such a fungus

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Origin and Etymology of phytophthora

New Latin, from phyt- + -phthora

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