Definition of ash dieback in English:

ash dieback

Line breaks: ash die|back

noun

[mass noun]
A serious fungal disease of the European ash, characterized by the progressive death of the tree’s branches: the number of woodland sites where ash dieback has been detected has doubled
  • The disease is caused by Hymenoscyphus pseudoalbidus (also called Chalara fraxinea), subdivision Ascomycotina
More example sentences
  • It has emerged that 100,000 ash trees have already been burnt to stop the spread of ash dieback.
  • The threat of ash dieback is mitigated by the vigour with which new trees regenerate in the British climate.
  • The first outbreak of ash dieback has been confirmed in Northern Ireland.

Definition of ash dieback in:

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