silicat Noun, m, silicat silicate Appox. usage (any sense): 0.18 per million words Appox. usage (any sense): 0.18 per million words
penin Noun, n, penin (mineralogy) penninite (A double silicate of aluminium and magnesium) Appox. usage (any sense): less than 0.1 per million words Appox. usage (any sense): less than 0.1 per million words