Tectonic is an adjective that means related to building or construction.

The Greek word tekton (TECH tahn) refers to a ‘carpenter’ or ‘builder.’ Arriving in the English language in the mid 17th century, tectonic is sometimes used in the field of geology to refer to the structure of the earth’s crust. But in more common use, it refers to the structure of man-made buildings. Here’s an example:

I’ve always been a fan of ancient Roman architecture. Tectonic skills may have improved in proficiency since then, but the construction of that period was as beautiful as it would ever get.