: to transform (a planet, moon, etc.) so that it is suitable for supporting human life
But instead of waiting for natural events to change the martian climate, they are suggesting that humans attempt to "terraform" Mars—to make it more Earth-like.—Anne Barnard Astronomy on Tap will also have two biologists coming in to discuss the best ways to terraform other planets for human colonization.—Austin (Texas) American Statesman It is not difficult to terraform Mars. Yes, we, with advances in robotics, can change Mars from a cold rock to a garden.—Mike Helton
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!