The Clue
They're on the horizon: Abbr. (3 letter answer)
The Answer
MTS
Tags
Notes
The answer MTS is seen frequently, appearing about once every 190 puzzles.
Related Clues
Abbr. on a map
Abbreviated ranges
Atlas abbr.
Atlas ref.
Geog. feature
Geog. features
Geographical abbr.
A lot of Colo.
Map abbr.
Map abbrs.
Peaks: Abbr.
Range: Abbr.
Rockies, e.g.
Rocky elevs.
Andes, e.g.: Abbr.
The Appalachians, e.g.: Abbr.
Chain units: Abbr.
Churchill and Logan: Abbr.
Continental Div., e.g.
Everest and Etna: Abbr.
Geog. high points
Head and Rainier: Abbr.
High points: Abbr.
High spots, for short
Hood and others: Abbr.
Ida and Ossa: Abbr.
K2 and Kilimanjaro: Abbr.
McKinley and Hood: Abbr.
McKinley and others: Abbr.
Parts of a range: Abbr.
Rainier and Hood: Abbr.
Range components: Abbr.
Range parts: Abbr.
Rockies or Alps: Abbr.
Rushmore and Blanc, for short
Rushmore and Rainier: Abbr.
The Sierras, e.g.: Abbr.
Tetons or Rockies: Abbr.
Washington and McKinley: Abbr.
Washington, McKinley et al.: Abbr.
White and Adirondack: Abbr.
Wilson and McKinley: Abbr.
Certain chain units: Abbr.
Holyoke and Sinai, e.g.: Abbr.
Projections on some globes: Abbr.
They're often volcanic: Abbr.
They may have caps: Abbr.
Definition
MT as a noun:
1. (meitnerium, Mt, element 109, atomic number 109) = a radioactive transuranic element
2. (metric ton, MT, tonne, t) = a unit of weight equivalent to 1000 kilograms
3. (Montana, Treasure State, MT) = a state in northwestern United States on the Canadian border
4. (machine translation, MT) = the use of computers to translate from one language to another