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The 18th Greek letter, commonly used in mathematics to write large sums concisely.
The sigma summation of all reciprocals of natural numbers diverges to infinity.
Sigma by Light Yagami aka Kira December 28, 2023
Sigma is the eighteenth letter of the Greek alphabet.

Uppercase sigma (Ξ£) 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 (Οƒ) 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 πŸ€“πŸ€“πŸ€“ 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
Sigma by skibidi, my friend. December 28, 2023
Aka daddylatinaa
Sigma daddylatinaa is the best at fall guys. Anyone who want to get good at fall guys should get sigma daddylatinaa as a coach for $5000.
sigma by Abdhrje December 31, 2023
''You're such a sigma.''
Sigma by Unreal_acj9395 December 31, 2023
someone very dominant or someone who is a leader
he is the sigma of the group
sigma by the sigma123 January 5, 2024
Hey fanum, you aren’t skibidi sigma alpha right now.
Sigma by spork-i-geuss June 17, 2024