mycelium
/maɪˈsiliəm/
noun
- The vegetative part of a fungus, consisting of a network of fine white filaments (hyphae) that grows underground or in other organic matter.
- The mycelium of the mushroom spread through the soil for meters.
- Scientists are studying mycelium as a sustainable material for packaging.
- A single mycelium can live for hundreds of years in a forest.