Meaning of dieback

die•back

Pronunciation: (dī'bak"), [key]
— n. Plant Pathol.
  1. a condition in a plant in which the branches or shoots die from the tip inward, caused by any of several bacteria, fungi, or viruses or by certain environmental conditions.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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