Dictionary

sillimanite

noun sil·li·man·ite \ˈsi-lə-mə-ˌnīt\

Definition of SILLIMANITE

:  a brown, grayish, or pale green mineral that consists of an aluminum silicate in orthorhombic crystals often occurring in fibrous or columnar forms

Origin of SILLIMANITE

Benjamin Silliman †1864 American geologist
First Known Use: circa 1830

Browse

2 ENTRIES FOUND:
Next Word in the Dictionary: sillimanite groupPrevious Word in the Dictionary: sillibubAll Words Near: sillimanite
May 26, 2015
sacrilegious Hear it
grossly irreverent
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears