clay stone

or clay·stone

noun Geology.

Nearby words

  1. clay eater,
  2. clay flour,
  3. clay mineral,
  4. clay pigeon,
  5. clay road,
  6. clay, cassius marcellus,
  7. clay, henry,
  8. clay, lucius dubignon,
  9. clay-colored robin,
  10. clay-colored sparrow

Origin of clay stone

First recorded in 1770–80 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for claystones


[ klāstōn′ ]

A fine-grained, dark gray to pink sedimentary rock consisting primarily of compacted and hardened clay. Claystone is similar to shale but without laminations.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.