# tectonics

/tɛkˈtɑnɪks/ (US) · /tɛktˈɒnɪks/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/tectonics
Updated: 2026-05-30

## Definition

the study of how the Earth's surface moves and changes over time. It explains how mountains form and why earthquakes happen.

For teachers: the study of the structure and evolution of the Earth's crust and its large-scale structures. Often used in the context of plate tectonics to describe the movement of the Earth's lithosphere.

## Examples

- The mountain range was formed by tectonic activity.
- Geologists study tectonics to understand how the movement of the Earth's plates creates new landforms.
- The theory of plate tectonics revolutionized our understanding of the Earth's surface, explaining how continents drift and how seismic activity is distributed globally.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.