Found 2 items, similar to Anorthite.
English → English (WordNet) Definition: anorthite anorthite n : rare plagioclastic feldspar occurring in many igneous rocks
English → English (gcide) Definition: Anorthite Anorthite \A*nor"thite\, n. [Gr. 'an priv. + ? straight (? sc. ? right angle); not in a right angle.] A mineral of the feldspar family, commonly occurring in small glassy crystals, also a constituent of some igneous rocks. It is a lime feldspar. See Feldspar. [1913 Webster]