tectonic

adjective

tec·​ton·​ic tek-ˈtä-nik 

1

: of or relating to tectonics

2

: having a strong and widespread impact

a tectonic shift in voting patterns

tectonically

tek-ˈtä-ni-k(ə-)lē 

adverb

Synonyms of tectonic

• major
• significant
• historic
• important
• big

Examples of tectonic in a Sentence

There has been a recent tectonic shift in voting patterns.

a tectonic shift in societal trends occurred in the 1960s

Recent Examples on the Web

There are other tectonic settings on Earth where continents rift apart and eventually form new oceans — such as the East African Rift, which is in the process of splitting into two tectonic plates — but the San Andreas system is not one of them. —Brandi D. Addison, USA Today, 13 June 2026

That quake, a magnitude 6 centered near North Palm Springs, isn’t part of the tectonic pantheon that evokes the worst of California’s seismic fears — your Northridges, Loma Prietas or Sylmars. —Shelby Grad, Los Angeles Times, 11 June 2026

Betrayals and scandals like this are endemic to reality TV; the Bravoverse in particular is still living in the long shadow of 2023’s Scandoval, the tectonic collapse inside Vanderpump Rules that was also fueled by inter-group infidelity. —Kathryn Vanarendonk, Vulture, 10 June 2026

Southern California is home to two major fault lines, the San Andreas and San Jacinto, where large tectonic plates grind past each other, occasionally triggering violent earthquakes. —Victor Tangermann, Futurism, 10 June 2026

Word History

Etymology

probably borrowed from German tektonisch "pertaining to broader structural features of the earth's crust," earlier "of building or construction," borrowed from Late Latin tectonicus "of a builder or architect," borrowed from Greek tektonikós "of a carpenter, skilled in carpentry or building," from tekton-, téktōn "woodworker, carpenter, craftsman" + -ikos -ic entry 1; téktōn going back to Indo-European *tetḱ-on- (whence also Sanskrit takṣan-, tákṣā "carpenter," Avestan tašan-, tašā "builder, creator"), n-stem derivative from a verbal base *tetḱ- "fashion, produce," whence Sanskrit tákṣati "(s/he) fashions, builds from wood," Avestan tāšt "(s/he) forms," Latvian tešu, tèst "to hew," Old Church Slavic tešǫ, tesati "to hew, fell," (with o-grade) Lithuanian tašýti "to hew"

Note: A root of the form *tetḱ- would be peculiar for Indo-European. Helmut Rix, et al., (Lexikon der indogermanischen Verben, 2. Ausgabe, Wiesbaden, 2001) rescue the situation by hypothesizing that *tetḱ- represents a pre-Indo-European reduplicated aorist, *te-tḱ-, of a root *teḱ-, seen in unreduplicated form in Greek téknon "child, young of an animal" and étekon, tekeîn, aorist of tíktō, tíktein "to give birth to, beget, generate" (see dystocia). However—aside from the certain correspondence of Greek téktōn with Vedic Sanskrit takṣan-, Avestan tašan- —all other outcomes of this supposed root can be accounted for as *teḱ-s-, an extended form of *teḱ-. To explain this anomaly, Andrew Sihler (New Comparative Grammar of Greek and Latin, Oxford, 1995, p. 225) hypothesizes that téktōn is a conflation of a regular derivative *texōn and an unattested agentive derivative *téktōr, going back to *teks-tor-, (with cluster simplification as in hektós "sixth" corresponding to héx "six"). Traditionally added to the compared forms given in the etymology above are Latin texere "to weave, form by plaiting or twining, construct" and other words (see at text entry 1). See also technical entry 1.

First Known Use

1894, in the meaning defined at sense 1

Rhymes for tectonic

• atonic
• benthonic
• bionic
• bosonic
• bubonic
• canonic
• carbonic
• cyclonic
• demonic
• dystonic
• hadronic
• harmonic

Kids Definition

tectonic

adjective

tec·​ton·​ic tek-ˈtän-ik 

: of or relating to tectonics