Hypertext Webster Gateway: "sepal"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Sepal \Se"pal\, n. [NL. sepalum, formed in imitation of NL.
petalum, petal, to denote one of the divisions of the calyx:
cf. F. s['e]pale.] (Bot.)
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.
From WordNet (r) 1.7 (wn)
sepal
n : one of the green parts that form the calyx of a flower
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