A machine that has the capability to terraform.(noun)
A person who has control over such a machine.(noun)
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Use "terraformer" in a sentence
"First, there was some planning for the Howards End sim that needed doing, sketching out the general topography for our terraformer."
"First, the designated terraformer on our build team (we now have, I think, four builders, not counting me and Spooky) will get to work on the topography and warrens, the train tunnel and sea cliffs."
"But Jessica Ornitz, our terraformer and tunneler, will soon get to work on molding the stone to our purposes."