greenout

From green +‎ out. Compare English blackout, whiteout.

greenout (countable and uncountable, plural greenouts)

1. (Antarctica) The sensation caused by seeing plants again after a period in Antarctica.
   • [2001 June 9, Hince, Bernadette, “Antarctic Dictionary (transcript)”, in The Science Show‎, Australian Broadcasting Corporation:

     One of my favourites is 'greenout', for which I only found a single quotation, which is the experience you have when you've been in Antarctica which has very little vegetation, no trees or shrubs, not many smells of the vegetation, and you come back after weeks, months or a year or more to a vegetated place and the warm air is blowing off the continent that you're coming towards and you have a 'greenout' - you're overwhelmed by the sensations.]

   • 2008 December 10, Mittlefehldt, David "Duck", “The Antarctic search for meteorites: preparations”, in The Planetary Society blog‎:

     Maybe a trip to the greenhouse will lessen my feeling of greenout when I go north?

2. (slang) A temporary loss of consciousness due to inhalation of marijuana.
   • 2015 December 2, Trismg [username], “did I green out?”, in Reddit‎, r/trees:

     You and I had a similar incident, but yes you had a greenout. Did you stop smoking for a little while first? Because I stopped for 3 weeks and tried doing a "smoke marathon" and had a major greenout. Puked 3 times and sat on the couch thinking I was dying, happens to the best of us!

• Hince, Bernadette (2000) The Antarctic Dictionary, Csiro Publishing, →ISBN, page 158

• outgreen