Definify.com
Webster 1913 Edition
Perigone
Per′i-gone
,Noun.
[Pref.
peri-
+ Gr. [GREEK] productive organs.] 1.
(Bot.)
(a)
Any organ inclosing the essential organs of a flower; a perianth.
(b)
In mosses, the involucral bracts of a male flower.
2.
(Zool.)
A sac which surrounds the generative bodies in the gonophore of a hydroid.