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One who belongs to the lowest caste in Aldous Huxley's book Brave New World. Known for stunted growth, inferior intelligence, yet indispensibility. After death, they play a crucial role in phosphate reclamation. In short, a useful idiot.

Also known as "Epsilon-minus semi-moron"
Everyone works for everyone else. We can't do witout anyone. Even Epsilons are useful. We couldn't do without Epsilons.
by Douglas Weltman June 28, 2003
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Nov 26 Word of the Day
A tiny, almost imperceptible cough, usually hidden behind a mask due to; emphysema, asthma, allergies or the dreaded COVID, so as not to alarm others to your potential of being “the infected.”
I was walking through the grocery store and I had a tickle in my throat but I didn’t want people to think I was contagious so I let out a microcough.
by PeteLoaf320 November 25, 2020
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1) A really really small positive number (i.e. 0.00000001)
2) The fifth letter of the greek alphabet
3) What mathematicians such as Paul Erdos call little kids; a beautiful use of definition #1
"That's a cute epsilon! Is it a boss or a slave?" - Paul Erdos, Hungarian mathematician (obtained from 'The Man who loved Only Numbers')
by Sasha Ramani September 07, 2005
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A high level candidate for the order of NoyNoy (headquarter in Gothenburg, Sweden)
hey! Epsilon get over here and make me a drink. You are no NoyNoy yet.
by beskrivningsbyrans mastare March 27, 2010
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Epsilon is a cult on Grand Theft Auto Sanandreas. Somewhat secret, if you listen it can found. The cults symbol is a E part way on top of a T
listen to epsilon on the talk radio.
bump in to one of the hikers and listen.
by Coonotafoo October 22, 2011
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1. A small quantity.

2. Something that can be safely overlooked.

3. Something very small.
1. These french fries need epsilon more salt.

2. Ignore the tax, it is just an epsilon.

3. What a cute little epsilon!
by node-edon April 02, 2006
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fifth letter of the greek alphabet. tremendously epic. Often used as an exclamation, especially with regards to mathematical accomplishments.
bruh rumor has it that the mathemagician just pulled another epsilon

ok this is epic
by doiajsifdnjknakjnds May 29, 2019
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