greenout

Noun

greenout (countable and uncountable, plural greenouts)

1. (Antarctica) The sensation caused by seeing plants again after a period in Antarctica.
   • 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...[2001 June 9, Bernadette Hince, “Antarctic Dictionary (transcript)”, in The Science Show, Australian Broadcasting Corporation
   • Maybe a trip to the greenhouse will lessen my feeling of greenout when I go north?2008 December 10, Mittlefehldt, David "Duck", “The Antarctic search for meteorites: preparations”, in The Planetary Society blog
2. (slang) A feeling of sickness as a result of consuming excessive amounts of cannabis.
   • It [The Cannabis Kitchen Cookbook] also offers constant reminders about dosages and prudent consumption, so that noobs don’t do a Maureen Dowd and abandon pot after a single greenout.2015 September 25, Jason Wilson, “I tried recipes from the Cannabis Kitchen Cookbook, then I needed a long nap”, in The Guardian
   • One name gaining popularity is "greenout," which is when someone gets sick after smoking or eating cannabis.[2018 September 10, Dave Dormer, “Why overdose may be the wrong word when it comes to cannabis”, in CBC
3. (California, informal) A green sign patch applied to a guide sign.
   • There's again the greenout for "West," but what would have been greened out underneath "Junction"?2012 October 22, Steve Alpert, “I-805 northbound”, in Alpsroads.net, retrieved 07 Aug 2025
   • At Norwalk Blvd, the greenout covers a SR-35 shield.2013 February 13, Michael F. Ballard, “5n-norwalk-blvd-sign”, in Southern California Regional Rocks and Roads, retrieved 07 Aug 2025