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[fahy-tof-ther-uh] /faɪˈtɒf θər ə/
any of a group of fungi of the genus Phytophthora, which cause a serious plant disease, especially affecting apple and pear trees and potatoes.
Origin of phytophthora
< New Latin (1876), equivalent to Greek phyto- phyto- + -phthora, feminine of -phthoros, verbid of phtheírein to destroy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Historical Examples
  • We must remember that prior to 1860 the life-history of phytophthora was not known.

    Disease in Plants H. Marshall Ward
  • Late Blight (phytophthora infestans) is the same fungus as the late blight of potatoes, affecting both foliage and fruit.

    The Tomato Paul Work
  • Among them are the vine mildew (Peronospora viticola) (Fig. 35), the potato fungus (phytophthora infestans), and many others.

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