tectonic

American  

[tek-ton-ik] / tɛkˈtɒn ɪk /

adjective

1. of or relating to building or construction; constructive; architectural.

2. Geology.

   1. pertaining to the structure of the earth's crust.

   2. referring to the forces or conditions within the earth that cause movements of the crust.

   3. designating the results of such movements.

      tectonic valleys.

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tectonic British  

/ tɛkˈtɒnɪk /

adjective

1. denoting or relating to construction or building

2. geology

   1. (of landforms, rock masses, etc) resulting from distortion of the earth's crust due to forces within it

   2. (of processes, movements, etc) occurring within the earth's crust and causing structural deformation

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tectonic Scientific  

/ tĕk-tŏn′ĭk /

1. Relating to the forces involved in plate tectonics or the structural features resulting from them.

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Other Word Forms

• tectonically
  adverb

Etymology

Origin of tectonic

1650–60; < Late Latin tectonicus < Greek tektonikós pertaining to construction, equivalent to tekton- (stem of téktōn ) carpenter + -ikos -ic

Explanation

No, it’s not the latest electro-dance craze from Japan; the word tectonic refers to the earth's crust and the big hunks of it that shift around. Even though it’s popular with the geology crowd, tectonic comes from the Greek word for "building." That can help you remember that the earth's crust consists of the building blocks we live on — the continents. Tectonic plates are the large sections of the earth’s surface that shift. If you live in a part of the world that sits on the edge of a tectonic plate, like the San Andreas Fault in California, you’ve probably felt an earthquake or two.

Example Sentences

Reagan amid the tumult and tectonic fracturing of the 1960s Civil Rights and Free Speech movements.

From Los Angeles Times • May 10, 2026

The displacement of longtime No. 1 “Citizen Kane” by “Vertigo” in 2012 was a tectonic event.

From The Wall Street Journal • Apr. 30, 2026

In some regions, scientists have found fragments of old tectonic plates and bursts of volcanic activity that did not fully make sense before.

From Science Daily • Apr. 29, 2026

Consumers are still in the midst of a tectonic shift in viewing habits, which has left things extremely fragmented in terms of product choice and pricing.

From MarketWatch • Mar. 30, 2026

With so much moisture in the air and loose dirt from both tectonic upheavals and the new species of flora tearing up the topsoil, it was like thin mud being thrown constantly in your face.

From "The Marrow Thieves" by Cherie Dimaline

Related Words

• anatomical
• architectural
• basic
• constitutional
• skeletal