1S or 1s may refer to: *

1s electron In atomic theory and quantum mechanics, an atomic orbital is a function describing the location and wave-like behavior of an electron in an atom. This function can be used to calculate the probability of finding any electron of an atom in any spe ...

, in an atomic orbital *

Sabre (computer system) Sabre Global Distribution System, owned by Sabre Corporation, is a travel reservation system used by travel agents and companies to search, price, book, and ticket travel services provided by airlines, hotels, car rental companies, rail providers ...

's IATA code * 1S, a series of

Toyota S engine The Toyota S Series engines are a family of straight-4 petrol or CNG engines with displacement from 1.8 L to 2.2 L produced by Toyota Motor Corporation from January 1980 to August 2007. The series has cast iron engine blocks and alloy c ...

s * SSH 1S (WA); see

Washington State Route 502 State Route 502 (SR 502, officially known as the Battle Ground Highway) is a state highway in the U.S. state of Washington, serving the city of Battle Ground in Clark County. The highway travels due east from an interchange with In ...

Washington State Route 503 State Route 503 (SR 503) is a state highway serving Clark and Cowlitz counties in the U.S. state of Washington. The highway travels north from a short concurrency with SR 500 in Orchards through Battle Ground, the eastern ter ...

See also