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crown gall

noun, Plant Pathology.
a disease of peaches, apples, roses, grapes, etc., characterized by the formation of galls on the roots or stems usually at or below ground level, caused by a bacterium, Agrobacterium tumefaciens.
the gall itself.
Origin of crown gall
1895-1900 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for crown-gall
Historical Examples
  • In common with all tree-fruits, the peach is attacked by crown-gall (Bacterium tumefaciens Smith and Townsend).

    The Peaches of New York U. P. Hedrick
  • The raspberry is a common carrier of crown-gall and should not be planted as an inter-crop in a peach-orchard.

    The Peaches of New York U. P. Hedrick

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