Dictionary

pileus

noun pi·le·us \ˈpī-lē-əs\
plural pi·lei \-lē-ˌī\

Definition of PILEUS

1
[Latin] :  a pointed or close-fitting cap worn by ancient Romans
2
:  the convex, concave, or flattened spore-bearing structure of some basidiomycetes that is attached superiorly to the stem and typically is expanded with gills or pores on the underside —called also cap

Origin of PILEUS

New Latin, from Latin
First Known Use: 1715

pileus

noun pi·le·us \ˈpī-lē-əs\   (Medical Dictionary)
plural pi·lei \-lē-ˌī\

Medical Definition of PILEUS

:  the convex, concave, or flattened spore-bearing structure of some basidiomycetous fungi that is attached to the top of the stem and typically is expanded with gills or pores on the underside—called also cap

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