A fluoride of sodium and aluminum, found in Greenland, in white cleavable masses; -- used as a source of soda and alumina.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a containing group, substance or whole.
Calcium fluoride, a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a containing group, substance or whole.