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epithema

noun ep·i·the·ma \ ˌepəˈthēmə , ə̇ˈpithəmə \
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Definition of epithema

plural epithemata \-thēmətə, -them-\
: a horny excrescence on the bill of some birds (such as the casque of a hornbill)

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Origin and Etymology of epithema

New Latin, from Greek epithema something put on, from epitithenai

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