noun see: orth- Date: 1863 a granular plutonic igneous rock composed almost exclusively of a soda-lime feldspar (as labradorite), anorthositic adjective
ANORTHOSITE
Meaning of ANORTHOSITE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012