ATMO
4 letters
Historical clue formulations
- Prefix with -sphere — 2020-08-30
- Prefix with sphere — 2019-07-30
- Prefix with sphere — 2016-10-17
- Vapor: Prefix — 2013-10-04
- Prefix with sphere — 2011-01-02
- Spherical beginning? — 2010-02-11
- Prefix with sphere — 2007-11-13
- Prefix with sphere — 2005-04-18
- Prefix with sphere — 2004-09-12
- Air: Prefix — 2004-07-14
- Spherical opening? — 2004-03-23
- Prefix with meter or sphere — 2003-01-11
- Prefix with sphere — 2002-06-12
- Spheric opening? — 2000-10-24
- Sphere starter — 2000-03-08
- Prefix with sphere — 1999-08-29
- Prefix with sphere — 1999-01-16
- Prefix with sphere — 1996-06-03
- Prefix with meter or sphere — 1995-12-30
- Sphere starter — 1995-11-16
- Prefix with sphere — 1995-08-22
- Sphere starter — 1995-04-28
- Prefix with sphere — 1994-09-12
- Sphere starter — 1994-07-31