Biology
Mycelium
The vegetative part of a fungus, consisting of a network of fine white filaments (hyphae) that spread through soil or other substrates. The main body of the fungus; mushrooms are just reproductive structures.
Biological Context
A single mycelium can extend for miles, making fungi among the largest organisms on Earth. Mycelium breaks down organic matter, forms mycorrhizal partnerships with plants, and can transport nutrients across considerable distances. It's the infrastructure underlying forest ecosystems.
Business Application
Business mycelium: the invisible infrastructure connecting visible entities. Supply chains, financial networks, communication systems. Most business value flows through connections people don't see.