To change a planet's surface and atmosphere so that life as it exist on Earth is possible [compound from L Found on http://www.encyclo.co.uk/local/20035
terraform, terraforms, terraforming, terraformed 1. To transform (a landscape) on another planet into one having the characteristics of landscapes on Earth. 2. To alter the environment of a celestial body in order to make it capable of supporting terrestrial life forms. 3. To change another planet's surface and atmosphere so that life as it exist... Found on http://www.wordinfo.info/words/index/info/view_unit/2120/3