The Collaborative International Dictionary of English v.0.48:
Mycology \My*col"o*gy\, n. [Gr. my`khs fungus + -logy.] That branch of botanical science which relates to the mushrooms and other fungi. [1913 Webster]WordNet (r) 3.0 (2006):
mycology n 1: the branch of botany that studies fungi and fungus-caused diseases