Hymenomycetes \Hy`me*no*my*ce"tes\, n. pl. [NL., fr. Gr. ? a membrane + ?, ?, a mushroom.]

(Bot.) One of the great divisions of fungi, containing those species in which the hymenium is completely exposed. --M. J. Berkley.

Source: Webster's Revised Unabridged Dictionary (1913)