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dieback

[ dahy-bak ]

noun

, Plant Pathology.
  1. a condition in a plant in which the branches or shoots die die from the tip inward, caused by any of several bacteria, fungi, or viruses or by certain environmental conditions.

dieback

/ ˈdaɪˌbæk /

noun

  1. a disease of trees and shrubs characterized by death of the young shoots, which spreads to the larger branches: caused by injury to the roots or attack by bacteria or fungi
  2. any similar condition of herbaceous plants
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. intr, adverb (of plants) to suffer from dieback
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of dieback1

An Americanism dating back to 1885–90; die 1 + back 2

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die awaydieb. alt.

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