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collophane

[ kol-uh-feyn ]
/ ˈkɒl əˌfeɪn /
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noun Mineralogy.
a massive, cryptocrystalline variety of apatite that is the principal component of phosphate rock and fossil bone.
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Also col·loph·a·nite [kuh-lof-uh-nahyt, kol-uh-fuh-]. /kəˈlɒf əˌnaɪt, ˈkɒl ə fə-/.

Origin of collophane

1915–20; <German Kollophan, equivalent to Greek koll(a) glue + -o- -o- + -phan -phane
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
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