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cyathium

noun cy·ath·i·um \ sīˈathēəm \
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Definition of cyathium

plural cyathia \-ēə\
: an inflorescence consisting of a cuplike involucre with the flowers arising from its base (as in the poinsettia)

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Origin and Etymology of cyathium

New Latin, from Greek kyathion, kyatheion, diminutive of kyathos cup

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