This shows grade level based on the word's complexity.
sillimanite
[ sil-uh-muh-nahyt ]
/ ˈsɪl ə məˌnaɪt /
Save This Word!
This shows grade level based on the word's complexity.
noun
a mineral, aluminum silicate, Al2SiO5, occurring in the form of long, slender, and often fibrous crystals.
QUIZ
TAKE JOY IN ACING THIS QUIZ ON “PRIDE” SYNONYMS
Hold your head up high as you embark on this quiz that explores some of the synonyms and meanings of “pride.”
Question 1 of 7
What does "dignity" mean?
Also called fibrolite.
Words nearby sillimanite
Sillanpää, sillcock, siller, Sillery, Silliman, sillimanite, Sillitoe, Sills, silly, silly billy, Silly Putty
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use sillimanite in a sentence
In mica-gneisses sillimanite, kyanite, andalusite and garnet may occur.
Sillimanite usually forms exceedingly minute needles embedded in quartz.
British Dictionary definitions for sillimanite
sillimanite
/ (ˈsɪlɪməˌnaɪt) /
noun
a white, brown, or green fibrous mineral that consists of aluminium silicate in orthorhombic crystalline form and occurs in metamorphic rocks. Formula: Al 2 SiO 5
Word Origin for sillimanite
C19: named after Benjamin Silliman (1779–1864), US chemist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for sillimanite
sillimanite
[ sĭl′ə-mə-nīt′ ]
A usually white, pale-green or brown orthorhombic mineral occurring as long, slender, fibrous crystals in metamorphic rocks. It is a polymorph of andalusite and kyanite, but can form at higher temperatures than either of these. Chemical formula: Al2SiO5.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.