The Collaborative International Dictionary
Mycelial
Mycelium \My*ce"li*um\, n. [NL., fr. Gr. my`khs a mushroom.] (Bot.) The white threads or filamentous growth from which a mushroom or fungus is developed; the so-called mushroom spawn. -- My*ce"li*al, a.
Wiktionary
mycelial
a. Of or pertaining to the mycelium