A subatomic particle that are composed of two groups. Quarks, which makes up most of the mass of an atom, includes proton and neutron, and leptons which include electrons and neutrinos. Take a Quantum physics course for more info.
Fermions definition is kinda complex
by hobos_on_trains April 02, 2010

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Top Definition
The little particle that drives fermentation.
It takes water, fermions, and patience to make ethanol from corn.
by Orthogonal Jones July 10, 2008

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The accepted response to being called a bozon.
Nerd 1 Adam, you are such a bozon.

Nerd 2 Yeah, well, at least i am not a fermion.
by Nate_Dawg September 05, 2006

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