Sigma

Sigma is the eighteenth letter of the Greek alphabet.

Uppercase sigma (Σ) is used in Sigma Notation, also known as summation notation in mathematics. It represents the addition of a sequence, and this sequence can be derived from values given by a function, values in a set, values present in a Free-Body Diagram, etc.

Lowercase sigma (σ) represents many things across all sciences. Notably, it represents the Stefan-Boltzmann constant, a constant used in the Stefan-Boltzmann law of radiation. In chemistry, sigma bonds are a type of bond characterized by overlapping p-orbitals. In quantum mechanics, sigma represents Pauli matrices. In biology, sigma receptors are poorly understood cell receptors that bond to certain stimulants like cocaine, meth, and other drugs.
Person 1: Sticking out your gyatt for the rizzler... I just wanna be your sigma...
Person 2: Erm 🤓🤓🤓 technically 🤡🤡🤡 your statement implies you want to be the my summation, further implying you want to be a part of my cell receptors 🫢🫢🫢 my atomic bonds 😤😤😤 and my-
Person 1: Can you shut the fuck up and kys
by skibidi, my friend. December 28, 2023
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Sigma

Good sigma8:A person who cares about other people
Example: somebody almost gets shot by a bullet, but you push the person and you get shot instead(the person that pushed and got shot is the sigma)
Bad sigma: person who’s being rude to a person mentally or physically
Example:(persons, being nice by picking up a bag at the person purposely dropped)
(and goes to the other person on the person they went to sigma will drop it)
by U209289uwiuhwu January 07, 2023
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Sigma

They Have so much Sigma people here in Ohio
by Mr Skibidi January 15, 2025
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Sigma

Lucas: "...That's because i'm a sigma." Tori: "So sigma."
by Rqia May 17, 2022
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Sigma

It's me.
"I'm sigma"
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SIGMA

A word used to describe a person, commonly a male who does not simp over women. Some examples would be
Jacob Horrocks
Celer the Dog
Peter Griffing

Patrick Bateman
Batman
LeBron James Mother
Person 1: Omg Jacob Horrocks is so Leng
Person 2:Alai he is so sigma.
by Bigdaddycrusher December 05, 2023
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Sigma

Sigma aka "cool dude" or a gentle man
That guy opened the car door for her—definitely a sigma move
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