Crossword Heaven

Answer: SIGMA

SIGMA is a crossword puzzle answer that we have spotted 64 times.

• Greek letter
• ___ Alpha Epsilon fraternity
• Greek S
• Fraternity letter
• Standard deviation symbol
• Symbol of conductivity
• ___ Society (super-high I.Q. group)
• Science society ___ Xi
• Calculus symbol
• Arithmetic series symbol
• Rho follower
• Frat letter
• Greek letter meaning "sum" in math
• "The Sweetheart of ___ Chi"
• Letter on a frat house
• Summation symbol
• Symbol in a Riemann sum
• Letter after rho
• Letter on the AutoSum button in Excel
• Sum symbol
• Letter between rho and tau
• It's halfway between pi and upsilon
• Sum symbol, in math
• Tau preceder
• Part of some frat names
• 18th Greek letter
• 18th letter of the Greek alphabet
• Start for Socrates?
• Character in "The Iliad"
• Start for Sophocles?
• Summation signifier, in math
• Letter on a house used by 4-Across
• Head of ancient Sparta?
• Greek consonant
• 'The Sweetheart of ___ Chi'
• S, as in Socrates
• Greek "S"
• Summation symbol in math
• Sorority letter
• Letter in some fraternity names
• Sophocle's initial
• Rho-tau connection
• S, for Socrates
• Rho-tau linkup
• With 65-Down, 160-year-old fraternity founded at Miami University of Ohio
• Rho-tau seperator
• Letter before tau
• Summation symbol, in math
• Letter before 7-Down
• Frat house letter
• Sophocle's initial, to Sophocles
• Certain Greek letter
• What Archimedes was finished with
• Aristotle's "s"
• Ess
• Eighteenth Greek letter
• Sweater letter
• 18th chapter of a frat
• Greek letter that resembles a rotated M
• Symbol for stock volatility, in finance
• Two after pi
• Greek letter that looks like a sideways M
• It's at the end of "Oedipus"
• Greek letter S