Definition of sillimanite in English:

sillimanite

Syllabification: sil·li·man·ite
Pronunciation: /ˈsiləməˌnīt
 
/

noun

An aluminosilicate mineral typically occurring as fibrous masses, commonly in schist or gneiss.
More example sentences
  • Muscovite and aluminosilicates are almost entirely absent although, where present, the aluminosilicate is sillimanite.
  • The aluminium silicate minerals andalusite, kyanite, and sillimanite are good examples of this phenomenon of polymorphism.
  • Growth of titanite took place during the metamorphic climax in rocks from the kyanite and sillimanite zones.

Origin

mid 19th century: from the name of Benjamin Silliman (1779–1864), US chemist + -ite1.

Definition of sillimanite in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day humoresque
Pronunciation: ˌ(h)yo͞oməˈresk
noun
a short, lively piece of music