The term translates horribly into Finnish: "maankaltaistaminen". "To make like Earth/ground/dirt" and "make like" as in "type", not "form".

So it could be like "earthlikening" instead of "terraforming".

Which makes me think of this Wikipedia that's written in the way they imagine English could've evolved if it wasn't influenced by Latin.

https://anglish.fandom.com/wiki/Main_leaf

for instance their article on maths starts with:

Telcraft (scorelore, rimecraft or reckonlore) (English: Mathematics) is the smeying of scorings, or the recking of begrips such as score, room, shift, and forebuilding. Benjamin Peirce called it "the cunning which draws needful outcomes".

Through foredeeming and wordlock mulling, scorelore arose from notching, reckoning, deeming, and the learning of sheathes and shapes.

Knowledge and note of fern scorelore have always been a spanning and a needful lifetool, as can be witnessed from orshafts of Egypt, Bearithland, Indland, China and Frodland. Furthermore, the Ishango bone is more than 20 thousand years old.

Titillating, isn't it?