| Atomic number of hydrogen | 25 |
| Atomic number of helium | 23 |
| Atomic number 44 symbol | 23 |
| Atomic event, in headlines | 26 |
| Atomic energy oversight agcy. | 29 |
| Atomic clock standardizer | 25 |
| Atomic bomb trials, briefly | 27 |
| Atomic bomb trial, briefly | 26 |
| Atomic bomb test site of 1946 | 29 |
| Atomic absorption units | 23 |
| Atom-splitting Nobelist | 23 |
| Atom with an electric charge | 28 |
| Atom with a negative charge | 27 |
| Atom negatively charged | 23 |
| Atoll's composition | 23 |
| Atmospheric pressure unit | 25 |
| Atmospheric pressure measurer | 29 |
| Atmospheric pressure line | 25 |
| Atmospheric pollution meas. | 27 |
| Atmospheric phenomenon | 22 |
| Atmospheric music genre | 23 |
| Atmospheric layer of note | 25 |
| Atmospheric health hazard | 25 |
| Atmospheric disturbance | 23 |
| Atmospheric balloon probe | 25 |
| Atmospheric aggregation | 23 |
| Atmosphere: Comb. form. | 23 |
| Atmosphere: Comb. form | 22 |
| Atmosphere, in compounds | 24 |
| Atmosphere or ambience | 22 |
| Atmosphere of despondency | 25 |
| Atmosphere at a pet salon? | 26 |
| ATM user's requirement | 26 |
| ATM user's annoyance | 24 |
| ATM purchase, nowadays | 22 |
| ATM maker bought by AT&T | 28 |
| Atlas, Titan or Minuteman | 25 |
| Atlas, for example: Abbr. | 25 |
| Atlas shelfmate: Abbr. | 22 |
| Atlas or dictionary, e.g. | 25 |
| Atlas Mountains locale | 22 |
| Atlas Mountains country | 23 |
| Atlas maker's subj. | 23 |
| Atlas enlargement, often | 24 |
| Atlas did it when he sneezed | 28 |
| Atlas abbr. until 1991 | 22 |
| Atlas abbr. before 1991 | 23 |
| Atlantis was one: Abbr. | 23 |
| Atlantis was found here, once | 29 |
| Atlantis dweller of comics | 26 |
| Atlantis docked with it | 23 |
| Atlantis cover, supposedly | 26 |
| Atlantique or Pacifique | 23 |
| Atlantic-Pacific linkup | 23 |
| Atlantic Ten school home | 24 |
| Atlantic shipping nemesis | 25 |
| Atlantic republic: Abbr. | 24 |
| Atlantic Records, e.g. | 22 |
| Atlantic or Pacific, e.g. | 25 |
| Atlantic or Pacific fill | 24 |
| Atlantic Ocean, slangily | 24 |
| Atlantic Ocean islands | 22 |
| Atlantic mystery region | 23 |
| Atlantic fishery auditors? | 26 |
| Atlantic Division NBA team | 26 |
| Atlantic Division cagers | 24 |
| Atlantic crosser of old | 23 |
| Atlantic convoy's foe | 25 |
| Atlantic cod relatives | 22 |
| Atlantic coast jellyfish | 24 |
| Atlantic coast explorer | 23 |
| Atlantic Coast dweller | 22 |
| Atlantic City's Steel ___ | 29 |
| Atlantic City's Steel --- | 29 |
| Atlantic City structure | 23 |
| Atlantic City souvenir | 22 |
| Atlantic City offering | 22 |
| Atlantic City machines | 22 |
| Atlantic City edifices | 22 |
| Atlantic City demonstration | 27 |
| Atlantic City attractions | 25 |
| Atlantic City attraction | 24 |
| Atlantic City activity | 22 |
| Atlantic City director | 25 |
| Atlantic Beach attraction | 25 |
| Atlantic area of mystery | 24 |
| Atlantic angler's catch | 27 |
| Atlantic and Pacific, e.g. | 26 |
| Atlantic and Oriental (abbr.) | 29 |
| Atlantic alliance, for short | 28 |
| Atlantic 10 Conference sch. | 27 |
| Atlanta-to-Wilmington dir. | 26 |
| Atlanta-to-St. Pete dir. | 24 |
| Atlanta-to-Savannah dir. | 24 |
| Atlanta-to-Richmond dir. | 24 |
| Atlanta-to-Raleigh dir. | 23 |
| Atlanta-to-Charleston dir. | 26 |
| Atlanta-to-Athens dir. | 22 |
| Atlanta-Miami flight path | 25 |
| Atlanta-based televiser | 23 |