Hypertext Webster Gateway: "calyx"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Calyx \Ca"lyx\, n.; pl. E. {Calyxes}, L. {Calyces}. [L. calyx,
-ycis, fr. Gr. ? husk, shell, calyx, from the root of ? to
cover, conceal. Cf. {Chalice Helmet}.]
1. (Bot.) The covering of a flower. See {Flower}.
Note: The calyx is usually green and foliaceous, but becomes
delicate and petaloid in such flowers as the anemone
and the four-o'clock. Each leaf of the calyx is called
a sepal.
2. (Anat.) A cuplike division of the pelvis of the kidney,
which surrounds one or more of the renal papill[ae].
From WordNet (r) 1.7 (wn)
calyx
n : the sepals of a flower collectively forming the outer floral
envelope or layer of the perianth enclosing a developing
bud; usually green
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