polluting

verb

1. (form-of, gerund, participle, present)present participle and gerund of pollute

adj

1. Causing pollution; having a tendency to pollute.

   “De-icing a plane is expensive, polluting, and time-consuming, so when sudden weather changes mean it has to be done twice, that has an impact on the bottom line, the environment and on-time departures.”

   “But because rare earths are polluting to mine and process, it can take nearly three decades to get permission to open and operate a rare-earth mine in America, so finding substitutes won’t be easy.”