noun Etymology: Benjamin Silliman died 1864 American geologist Date: circa 1830 a brown, grayish, or pale green mineral that consists of an aluminum silicate in orthorhombic crystals often occurring in fibrous or columnar forms
SILLIMANITE
Meaning of SILLIMANITE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012