'Sillimanite' definitions:
Definition of 'Sillimanite'
From: GCIDE
- Sillimanite \Sil"li*man*ite\, n. [After Benjamin Siliman, an American meneralogist.] (Min.) Same as Fibrolite. [1913 Webster]
Definition of 'sillimanite'
From: GCIDE
- Fibrolite \Fi"bro*lite\ (? or ?), n. [L. fibra a fiber + -lite: cf. F. fibrolithe.] (Min.) A silicate of alumina, of fibrous or columnar structure. It is like andalusite in composition; -- called also sillimanite, and bucholzite. [1913 Webster]