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73 total results for SIGMA( score: 50 )
33 results for SIGMA from Modern Era puzzles:
Repeated clues show (number of Modern Era occurrences).
| Date | Grid | Clue | Author | Editor |
| Mon May 1, 2023 | 4A | Greek "S" (3) | Alina Abidi and Matthew Stock | Shortz |
| Sat Mar 25, 2023 | 27D | It's at the end of "Oedipus" | Robyn Weintraub | Shortz |
| Sat Aug 28, 2021 | 10A | Symbol for stock volatility, in finance | Julian Lim | Shortz |
| Mon Mar 15, 2021 | 8D | Letter after rho | Philip K. Chow | Shortz |
| Mon Feb 10, 2020 | 47D | Letter before tau | Bruce Haight | Shortz |
| Thu Jan 31, 2019 | 59D | Summation symbol, in math (3) | Peter A. Collins | Shortz |
| Wed Dec 26, 2018 | 9A | Rho follower | Howard Barkin | Shortz |
| Thu Mar 15, 2018 | 64A | Arithmetic series symbol (2) | Joe DiPietro | Shortz |
| Thu May 26, 2016 | 55A | Letter before 7-Down | Andrew Zhou | Shortz |
| Sun Jun 14, 2015 | 99A | Standard deviation symbol (5) | Randolph Ross | Shortz |
| Sun Mar 1, 2015 | 48A | With 65-Down, 160-year-old fraternity founded at Miami University of Ohio | Finn Vigeland | Shortz |
| Tue Oct 21, 2014 | 44A | Σ | Patrick Blindauer | Shortz |
| Sat Jan 11, 2014 | 39A | Sum symbol | Martin Ashwood-Smith | Shortz |
| Sun Feb 17, 2013 | 1A | Summation symbol in math (3) | Ian Livengood and J.A.S.A. Crossword Class | Shortz |
| Tue Apr 17, 2012 | 51D | Summation symbol in math (3) | Milo Beckman | Shortz |
| Mon Apr 2, 2012 | 9D | Greek "S" (3) | Lynn Lempel | Shortz |
| Sun Jan 22, 2012 | 27A | Head of ancient Sparta? | Adam Fromm | Shortz |
| Tue Jun 21, 2011 | 59A | Summation signifier, in math | Kelsey Boes | Shortz |
| Thu Nov 19, 2009 | 6A | Symbol in a Riemann sum | Tyler Hinman and Jeremy Horwitz | Shortz |
| Tue Sep 29, 2009 | 51D | Summation symbol | Paula Gamache | Shortz |
| Sun Mar 15, 2009 | 109D | Arithmetic series symbol (2) | Patrick Berry | Shortz |
| Sat Nov 4, 2006 | 25D | Standard deviation symbol (5) | Rich Norris | Shortz |
| Tue Dec 6, 2005 | 66A | Calculus symbol | Nancy Salomon | Shortz |
| Sun Feb 15, 2004 | 107A | Standard deviation symbol (5) | Derrick Niederman | Shortz |
| Sat Jan 3, 2004 | 5A | Standard deviation symbol (5) | James M. and James C. Jenista | Shortz |
| Sun Aug 18, 2002 | 103D | ___ Society (super-high I.Q. group) | Michael Ashley | Shortz |
| Wed Jul 24, 2002 | 46D | Science society ___ Xi | Eric Berlin | Shortz |
| Sun Sep 30, 2001 | 58D | Symbol of conductivity | Con Pederson | Shortz |
| Sun Jul 15, 2001 | 29D | Standard deviation symbol (5) | Elizabeth C. Gorski | Shortz |
| Sat Dec 2, 2000 | 52D | Fraternity letter | David J. Kahn | Shortz |
| Tue Jun 15, 1999 | 9A | ___ Alpha Epsilon fraternity | Stephanie Spadaccini | Shortz |
| Tue Mar 23, 1999 | 55A | Greek S (3) | Nathaniel Weiss | Shortz |
| Mon Apr 28, 1997 | 62A | Greek letter | Peter Gordon | Shortz |
3 results for SIGMA from Variety puzzles:
| Date | Type | Grid | Clue | Author | Editor |
| Sep 1, 2019 | Acrostic | E | Leading character of Sophocles? | Emily Cox & Henry Rathvon | Shortz |
| Sep 19, 2010 | Cryptic | 18A | Fraternity symbol, sign and map left incomplete (5) | Emily Cox & Henry Rathvon | Shortz |
| Aug 6, 2000 | Panda | 23A | Magi's character | Mel Taub | Shortz |
37 results for SIGMA from pre-Shortz puzzles:
| Date | Grid | Clue | Author | Editor |
| Thu Aug 1, 1991 | 25D | " ... sweetheart of ___ Chi" | Eli Wesoff | Maleska |
| Mon May 13, 1991 | 5A | Tau's predecessor | Arthur S. Verdesca | Maleska |
| Sat May 5, 1990 | 17A | Frat letter | Daniel Girardi | Maleska |
| Sun Sep 24, 1989 | 56D | Ess | Irene Smullyan | Maleska |
| Thu Aug 25, 1988 | 26D | Greek letter | William Canine | Maleska |
| Sun Aug 24, 1986 | 9A | "The Sweetheart of ___ Chi" | Arnold Moss | Maleska |
| Sun Sep 30, 1984 | 95A | Millesecond | Harriet Gilson Rosenberg | Maleska |
| Wed Jul 25, 1984 | 41A | Greek letter | Whitten | Maleska |
| Fri Jun 18, 1982 | 6D | Start for Sophocles | I. Judah Koolyk | Maleska |
| Wed Jul 29, 1981 | 21D | Greek letter | Jeanette K. Brill | Maleska |
| Sun Jul 26, 1981 | 54D | Between rho and tau | Maura B. Jacobson | Maleska |
| Sun Jan 11, 1981 | 68D | Summation symbol | Stanley Glass | Maleska |
| Sun Mar 20, 1977 | 35D | Millisecond | Ruth N. Schultz | Maleska |
| Sun Dec 5, 1976 | 111D | Greek letter | Maura B. Jacobson | Weng |
| Sun Sep 9, 1973 | 117D | Greek letter | Gladys V. Miller | Weng |
| Sat Jun 10, 1972 | 44D | Greek letter | Unknown | Weng |
| Wed Oct 9, 1968 | 43A | Greek letter. | Unknown | Farrar |
| Sun Jul 28, 1968 | 94A | Greek letter | Sidney Lambert | Farrar |
| Mon Mar 11, 1968 | 30A | Greek letter. | Unknown | Farrar |
| Sun Aug 13, 1967 | 10A | Greek letter. | Hume R. Craft | Farrar |
| Sun Apr 2, 1967 | 50A | Greek letter. | A. J. Santora | Farrar |
| Sat Dec 10, 1966 | 1A | Greek letter. | Unknown | Farrar |
| Wed Sep 30, 1964 | 8D | Fraternity letter. | Unknown | Farrar |
| Sun Nov 24, 1963 | 50D | ___ Chi. | Eugene T. Maleska | Farrar |
| Thu Dec 6, 1962 | 46D | ___ VII. | Unknown | Farrar |
| Sun Nov 4, 1962 | 61A | Wally's ___ 7. | Diana Sessions | Farrar |
| Mon Jan 29, 1962 | 39D | Greek letter. | Bettie Lou Fisher | Farrar |
| Sun Aug 6, 1961 | 4A | Greek letter. | Christine Valence | Farrar |
| Tue Jun 27, 1961 | 56A | Greek letter. | Unknown | Farrar |
| Sat Dec 31, 1960 | 50D | Greek letter. | Unknown | Farrar |
| Thu Jun 18, 1959 | 8A | Greek letter. | S. A. Kay | Farrar |
| Mon Dec 23, 1957 | 5D | Greek letter. | Unknown | Farrar |
| Sat Oct 1, 1955 | 6D | ___ Chi. | Mel Taub | Farrar |
| Tue Mar 23, 1954 | 49D | Greek letter. | Unknown | Farrar |
| Mon Feb 23, 1953 | 17A | ___ Xi, fraternity for science research. | Edward Buckler | Farrar |
| Sun Apr 30, 1950 | 119A | Greek "S." | Harold T. Bers | Farrar |
| Sun Dec 21, 1947 | 107D | Greek letter. | Elizabeth Jackson | Farrar |