noun alu·no·gen \əˈlünəjən\

Definition of alunogen



  1. :  a mineral consisting of a white fibrous aluminum sulfate Al2(SO4)3·18H2O frequently found on the walls of mines and quarries —called also feather alum, hair salt

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Origin and Etymology of alunogen

French alunogène, from alun + -gène -gen

First Known Use: 1834

Seen and Heard

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a rounded knoll or a ridge of ice

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