blue mold

noun

A type of fungal growth that produces a bluish or blue-green surface, caused primarily by Penicillium expansum or Peronospora hyoscyami f.sp. tabacina.

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Meanings

nounblue mold (countable and uncountable, plural blue molds)

plural blue molds

  1. countableuncountableA type of fungal growth that produces a bluish or blue-green surface, caused primarily by Penicillium expansum or Peronospora hyoscyami f.sp. tabacina.
Cite this entry
APA

blue mold. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/blue%20mold

MLA

“blue mold.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/blue%20mold. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “blue mold,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/blue%20mold.

Source: blue mold on Wiktionary, CC BY-SA 4.0.