Short for Early Onset Senioritis. It typically occurs during the final few weeks of a high school junior's life, however it is not unusual to see some cases that begin after the second semester has begun.

Symptoms include fatigue, lack of motivation and at times narcissism.

See senioritis.
Junior 1: It's so sad that all our senior friends are graduating
Junior 2: Isn't it?
Junior 1: Did you study for Smith's test?
Junior 2: Nah, I'm suffering from EOS
by NotMarkTwain May 11, 2012
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1. A cult of wizards which search continuously for Hogwarts as a new regrouping spot through out the wilderness.

2. An illegal activity involving botnets
1. I wonder if EOS have found that new regroup spot yet? Tankhive2 appears to be really getting heated using unforgivable curses on his Future EOS applicants.

2. Did you hear that EOS_Oli sold his car to drop the Teamspeak server of honourable people?
by Albus Dumbledore the third November 22, 2010
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Boy1: I heard that she played him.
Boy2: Dang that’s tragic
Boy1: Right. Eos.
by musicplz May 02, 2018
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End of Sentence, maximum length a person can be held in prison
When is your EOS date. I EOS in 30 days.
by Vitriolic X January 07, 2011
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Millennial hippy health nut: omg almost out of the lavender rosemary EO blend I put in my diffuser at night time. Time to buy more!
by jujubeanz September 03, 2018
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The Eos Flu is the leading cause of death in the wilderness of Runescape.
eos member: You got the eos flu bro.
exo member: o shit my pixels.
by Eosmember983108 May 01, 2009
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A 3D film that was played in every Disneyland across the world. The show was usually located in Tomorrow land. It was a spaceopera that many fans enjoyed. The running span started in September 1986 and was removed during the child molestation allegations in July 1994. The film is about a Young Michael Jackson who plays as "Captain EO" with wild space crew. Space crew consisted of Fuzzball (that little squirrel looking butterfly thing) double headed pilot Idee and odee, Robotic Officer Major domo and also minor domo. And last but not least the clumsy elephant Hooter who always manages to miss things up for the crews missions.

The crew is looking for a beacon until they were chased by some enemy fighters. To make a long story short they are there to convert an evil princess into a sweet beautiful princess which they successfully accomplish by the end of the short film. It was an awesome film that I always hoped would one day go to video but never did. On top of that no soundtrack was released by the songs were later placed on one of Michael Jacksons compilations. We will miss you and your work Michael Jackson may you always be revered as the greatest artist of all time.
oh shit fucking Michael Jackon in a wanna be thriller space opera called Captain EO with a fuzzy 3d ball that has butterfly wings, oh shit I love this film!
by Mr.Pash June 28, 2009
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