noun hy·dro·cal·u·mite \"+ˈkalyəˌmīt\

Definition of hydrocalumite

  1. :  a colorless to light green mineral Ca2Al(OH)7.3H2O consisting of hydrous hydroxide of calcium and aluminum

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Origin and Etymology of hydrocalumite

hydr- + c- (from calcium) + alum- (from aluminum) + -ite

Seen and Heard

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a rounded knoll or a ridge of ice

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