Word Study
sillimanite
CIDE DICTIONARY
sillimanite, n. [After Benjamin Siliman, an American meneralogist.].
Same as Fibrolite. [1913 Webster]
OXFORD DICTIONARY
sillimanite, n. an aluminium silicate occurring in orthorhombic crystals or fibrous masses.
Etymology
B. Silliman, Amer. chemist d. 1864
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