WordReference Random House Unabridged Dictionary of American English © 2025
sil•li•man•ite
(sil′ə mə nīt′),USA pronunciation n.
- Mineralogya mineral, aluminum silicate, Al2SiO5, occurring in the form of long, slender, and often fibrous crystals. Also called fibrolite.
- 1825–30; named after B. Silliman; see -ite1
'sillimanite' also found in these entries (note: many are not synonyms or translations):