Sigma

1. The 20th Old/Ancient Greek letter or the 18th Modern/Classical Greek letter.
2. In mathematics used to indicate the summation of a set or series.
3. In statistics used to indicate something complicated not able to be understood by Urban Dictionary readers.
4. The best meaning: a sigma male. Similar to an alpha male but better. A lone wolf - a self-reliant and assertive male.

1. Yesterday I read a book in Greek and I saw the letter Sigma.
2. Blah blah blah sigma blah blah series blah blah- hey, you, why aren't you listening in class!
3. Mommy, what does sigma in statistics mean?
4. Man, look at this guy, he's such a sigma!

by Skalz_ July 14, 2024

Sigma

Sigma (Σ, σ, or word final ς) is the Eighteenth letter of the Greek Alphabet, representing the sound /s/ or /z/.

7-year-old: I’m so Sigma.
Middle-Aged Greek Man: Σώπα, ανόητο αγόρι. Δεν είσαι το γράμμα Σίγμα. (Shut up, stupid boy. You are not the letter Sigma.)

by Not Alaska Airlines August 6, 2024

Erm, what the sigma?

A famous quote by squidward, said in reaction to anything.

I'm pregnant and you're the father.
Erm, what the sigma?

by Buttquack April 9, 2024

Sigma

Used in rizzler situations where the sigma puts away all females and just locks in.

The sigma is getting ready to rizz. The sigma is about to be an alpha

by The rizzler12 May 3, 2024

Oliver (Sigma)

A guy who really loves smoking weed with his ginger mate and got a big cock

I really love Oliver (sigma)

by Jesus6920 April 2, 2023

Sigma Meal Skibidi Slicers

When someone has a meal at a Gen Alpha restaurant with iPad kids (McDonald's, Wendy's, etc.)

Friend: OMG guys! I just had my Sigma Meal Skibidi Slicers in Mcdonalds!!!

Friend 2: Stop being an iPad kid and have some actual rizz.

Friend: OK, but don't act like a rizzler in front of every sigma. Especially near the Alphas.

by Sigmamealskibidislicersofficia April 19, 2024

sigma nos

It literally means Marian hoes 4 Life

SIGMA NOS😂😂😜🤙

by CAFELORDZ February 12, 2025