Sepal
Pronunciation : Se"pal
Part of Speech : n.
Etymology : [NL. sepalum, formed in imitation of NL. petalum, petal, to denote one of the divisions of the calyx: cf. F. s?pale.] (Bot.)
Definition : Defn: A leaf or division of the calyx.
Note: When the calyx consists of but one part, it is said to be monosepalous; when of two parts, it is said to be disepalous; when of a variable and indefinite number of parts, it is said to be polysepalous; when of several parts united, it is properly called gamosepalous.
Source : Webster's Unabridged Dictionary, 1913