an·​cy·​lite | \ˈansəˌlīt\
plural -s

Definition of ancylite 

: a mineral Sr3Ce4(CO3)7(OH)·3H2O consisting of hydrous basic carbonate of strontium and cerium

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First Known Use of ancylite

circa 1900, in the meaning defined above

History and Etymology for ancylite

probably from Danish ankylit, from ankyl- + -it -ite

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The first known use of ancylite was circa 1900

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living or existing for a long time

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