illite

[ il-ahyt ]
/ ˈɪl aɪt /

noun

any of a group of clay minerals, hydrous potassium aluminosilicates, characterized by a three-layer micalike structure and a gray, light green, or yellowish-brown color.

Nearby words

  1. illinois,
  2. illinois bundleflower,
  3. illinois waterway,
  4. illinoisan,
  5. illiquid,
  6. illiteracy,
  7. illiterate,
  8. illiterati,
  9. illitic,
  10. illness

Origin of illite

First recorded in 1937; Ill(inois)2 + -ite1

Related formsil·lit·ic [ih-lit-ik] /ɪˈlɪt ɪk/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for illite

illite

/ (ˈɪlaɪt) /

noun

a clay mineral of the mica group, found in shales and mudstones. Crystal structure: monoclinic. Formula: K 1–1.5 Al 4 (Si 6.5–7 Al 1–1.5 O 20)(OH) 4

Word Origin for illite

C20: named after Illinois, where it was first found

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