Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective informal Of a very vivid green colour.
  • adjective informal Taking a great deal of responsibility for the natural environment.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

ultra- +‎ green

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Examples

  • But they lie, most of all, about how much we still require foreign oil, because these billion-dollar corporations claim they can't possibly afford to develop sufficiently advanced technology in your lifetime to create a 100-percent emissions-free, oil-free, ultragreen vehicle that still has all the comforts and performance of a regular car.

    more morford Annie 2006

  • But they lie, most of all, about how much we still require foreign oil, because these billion-dollar corporations claim they can't possibly afford to develop sufficiently advanced technology in your lifetime to create a 100-percent emissions-free, oil-free, ultragreen vehicle that still has all the comforts and performance of a regular car.

    Archive 2006-08-01 Annie 2006

  • The grass was amazing—not just green, but a sort of impossible ultragreen.

    Night World No. 2 L.J. SMITH 1997

  • The latter knows that the Na'vi are ultragreen - a New Age matriarchal eco-friendly culture spiritually connected to Every Living Thing.

    Broward-Palm Beach New Times | Complete Issue 2009

  • But they lie, most of all, about how much we still require foreign oil, because these billion-dollar corporations claim they can’t possibly afford to develop sufficiently advanced technology in your lifetime to create a 100-percent emissions-free, oil-free, ultragreen vehicle that still has all the comforts and performance of a regular car.

    Think Progress » Majority Whip Blunt: If I Stay In Charge, Congress Won’t ‘Do Anything Meaningful’ On Climate Change 2006

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