DictionarymoldFungal growth
noun / verb

mold

MOHLD/məʊld/

Fungal growth on damp or decaying matter.

Fuzzy mold spreads across the stale bread.

A close view of a single slice of stale bread on a plain plate, with clearly visible fuzzy green-white fungal colonies spreading across its surface.
Etymology

Middle English molde named the fungus on decaying matter. It probably comes from a verb meaning “grow moldy,” though a word for loose earth may instead have supplied or influenced it.

In context

NDSUExtension12:11
you're probably going to have some gray snow mold that's starting to grow underneath and that's because that fungus likes about 32 to 36 degrees Fahrenheit
Stop Turf Problems Before They Start

More examples

  • Damp conditions allowed the cheese to mold.
  • They removed the material affected by mold.
  • Several molds were identified in the sample.

Forms

mold · molds · molded · molding

moldy adjective — covered with fungal growth

Similar words

mildew
A term often used for particular powdery or superficial fungal growth.
fungus
The broader biological category.