In*du"si*um (?), n.; pl. Indu (#). [L., an under garment, fr. induere to put on: cf. F. indusie the covering of the seed spots of ferns.] Bot. (a)
A collection of hairs united so as to form a sort of cup, and inclosing the stigma of a flower.
(b)
The immediate covering of the fruit dots or sori in many ferns, usually a very thin scale attached by the middle or side to a veinlet.
(c)
A peculiar covering found in certain fungi.
© Webster 1913.