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cuspidine

noun
cus·​pi·​dine | \ˈkəspəˌdēn, -dīn\
plural -s

Definition of cuspidine 

: a mineral Ca4Si2O7(F,OH)2 consisting of a basic silicate of calcium

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History and Etymology for cuspidine

Italian cuspidina, from Latin cuspid-, cuspis point + Italian -ina -ine

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