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词汇 white rot
释义

Definition of white rot in English:

white rot

noun ˈwʌɪt ˌrɒt
  • 1Chiefly English regional (originally northern). Marsh pennywort, Hydrocotyle vulgaris (formerly believed to cause liver rot in sheep). Formerly also: †butterwort, Pinguicula vulgaris (obsolete). Compare red rot. Now rare and chiefly historical.

  • 2Fungal decay of trees or timber in which there is whitish discoloration of the wood (most commonly occurring in hardwoods in damp conditions); an instance of this.

  • 3Any of various fungal diseases of plants causing decay of tissue, often with formation of white mycelium, especially those caused by the ascomycetes Sclerotium cepivorum (in onions and related plants) and Coniella diplodiella (in grapes); an instance of this.

Origin

Late 16th century; earliest use found in John Gerard (c1545–1612), herbalist. From white + rot.

Definition of white rot in US English:

white rot

nounˈwʌɪt ˌrɒt
  • 1Chiefly English regional (originally northern). Marsh pennywort, Hydrocotyle vulgaris (formerly believed to cause liver rot in sheep). Formerly also: †butterwort, Pinguicula vulgaris (obsolete). Compare red rot. Now rare and chiefly historical.

  • 2Fungal decay of trees or timber in which there is whitish discoloration of the wood (most commonly occurring in hardwoods in damp conditions); an instance of this.

  • 3Any of various fungal diseases of plants causing decay of tissue, often with formation of white mycelium, especially those caused by the ascomycetes Sclerotium cepivorum (in onions and related plants) and Coniella diplodiella (in grapes); an instance of this.

Origin

Late 16th century; earliest use found in John Gerard (c1545–1612), herbalist. From white + rot.

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