An Σ is a sigma.

1 In math it is a summation symbol.

2 In Greek language it is a capital letter.

3 In ASCII it can substitute an E
1 I=1Σ4 I+6

2 αßΓπΣσµτΦΘΩδ∞φε∩≡

3 HΣLLO GRΣΣK DUDΣ
by ΣJ1oo1 November 7, 2009
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1) The Greek letter sigma
2) The summation operator, indicating a series to be summed
3) A synonym for "summer" due to definition (2) above
4) A synonym for "count it" due to definition (2) above, indicating agreement with someone
Guy 1: "Hey man, can't believe tomorrow is June 1st and it's almost Σ. What do you want to do after we finish these Σ exercises for math class? Maybe go to the ΣAE frat party?"
Guy 2: "Nah, let's chill with the broskis and watch '500 Days of Σ' while we drink some White Claw and Aperol spritzers."
Guy 1: "Σ! But it bothers me in that movie how Σ really screwed over JGL, NGL."
Guy 2: "Σ."
by Nicholas D August 8, 2023
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Ness used Psi rockin Σ!
The ramblin' Mushroom suffered 6900 hp!
Paula: Yo have you learnt psi rockin Σ yet

Ness: No but I'll try now

Ness leveled up to level 56
Ness' Iq went up by 3
Ness' Offense went up by 2
Ness' Defense went up by 2
Ness' Vitality went up by 4
Oh Baby!
Ness' HP went up by 24
Ness' PP went up by 16
Ness realised the power of Psi Rockin Σ
by Earthbound Fan July 25, 2022
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i ate some pi
sqrt - 1 = i
2^3 = 8
sigma = sum
pi = pi
Dude, √-1 2³ Σ Π, and it was delicious!
by Pseudomathjokes February 5, 2022
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Σ
Σ
by Σmale April 28, 2022
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