gneiss

noun
\ ˈnīs How to pronounce gneiss (audio) \

Definition of gneiss

: a foliated metamorphic rock corresponding in composition to a feldspathic plutonic rock (such as granite)

Keep scrolling for more

Other Words from gneiss

gneissic \ ˈnī-​sik How to pronounce gneissic (audio) \ adjective
gneissoid \ ˈnī-​ˌsȯid How to pronounce gneissoid (audio) \ adjective
gneissose \ ˈnī-​ˌsōs How to pronounce gneissose (audio) \ adjective

Examples of gneiss in a Sentence

Recent Examples on the Web Buried in the earth were remnants of fragments of the same type of rock that makes up the Callanish stones—called Lewisian gneiss—which, unlike the peat and clays that stud the island’s dirt, are poor conductors of electricity. Katherine J. Wu, Smithsonian Magazine, "Massive Lightning Strike May Have Inspired This Scottish Stone Circle," 31 Dec. 2019 The near-seamless local bedrock, a type of rock called gneiss, is geologically stable and keeps water out. Andrew Curry, The Atlantic, "What Lies Beneath," 11 Sep. 2017 The gneiss was also used to create the low stone walls that bring definition to the estate’s exterior walkways. USA TODAY, "Hawk Hill, contemporary 1960s home towering over N.Y.'s Hudson River, for sale," 11 Aug. 2017 The falls are a 62-foot-high double-plunge along a granitic gneiss ledge. Peter Marteka, courant.com, "Connecticut's Waterfalls: Five Beauties Not To Miss," 17 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'gneiss.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of gneiss

1757, in the meaning defined above

History and Etymology for gneiss

German Gneis, alteration of Middle High German gneiste spark, from Old High German gneisto; akin to Old English fȳrgnāst spark

Keep scrolling for more

Learn More about gneiss

Time Traveler for gneiss

Time Traveler

The first known use of gneiss was in 1757

See more words from the same year

Statistics for gneiss

Last Updated

14 Jan 2020

Cite this Entry

“Gneiss.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gneiss. Accessed 28 Feb. 2020.

More from Merriam-Webster on gneiss

Rhyming Dictionary: Words that rhyme with gneiss

Britannica.com: Encyclopedia article about gneiss

Comments on gneiss

What made you want to look up gneiss? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!