Definition of "calyx"
noun:
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A cup-like structure in the mammalian kidney.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
The outermost whorl of flower parts, comprising the sepals, when it is not the same in appearance as the next such whorl (the corolla).
from Wiktionary, Creative Commons Attribution/Share-Alike License -
The crown of a crinoid.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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