Not polluting; environmentally friendly; clean; green.(adjective)
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Use "nonpolluting" in a sentence
"For example, what other layperson would describe diesel engines as "nonpolluting"?"
"The Bush administration hopes that it will help resuscitate the moribund U.S. nuclear power industry and expand the use of this "nonpolluting" source of energy, a pillar of the Bush team's energy policy."
"We need to wean ourselves off the increasingly scarce and expensive and polluting foreign energy and embrace the renewable and nonpolluting -- green energy!"