Grey or green or brown mineral similar to mica and containing aluminum and potassium sulphates

Wiktionary Word definitions in Wiktionary
Etymology 1 n. 1 Any fossil wood which exhibits traces of having belonged to the pine family. 2 (context chemistry English) A sweet white crystalline substance extracted from the gum of a species of pine ((taxlink Pinus lambertiana species noshow=1), sugar ...

WordNet Word definitions in WordNet
n. grey or green or brown mineral similar to mica and containing aluminum and potassium sulphates

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Pinite \Pi"nite\, n. [L. pinus the pine tree.] (Paleon.) Any fossil wood which exhibits traces of having belonged to the Pine family. (Chem.) A sweet white crystalline substance extracted from the gum of a species of pine ( Pinus Lambertina ). It is isomeric ...