plagioclase | sense examples, Usage and Definition from wordnet dictionary online

Noun plagioclase has 1 sense

plagioclase, oligoclase - any of a rock-forming series of triclinic feldspars
--₁ is a kind of feldspar, felspar
--₁ is a substance of basalt; dacite
--₁ has particulars: albite, white feldspar; anorthite