Arco

Arco may refer to several topics, including places, a historic corporation, and a musical term. The name originates from the Italian word arco, meaning arc or bow.

Arco, Italy is a comune in the autonomous province of Trento in northern Italy. It lies in the region of Trentino-Alto Adige/Südtirol, near Lake Garda, at the entrance to the Val Sarca. The town is known for Castello di Arco, a medieval fortress, and serves as a base for rock climbing and outdoor activities in the surrounding limestone cliffs.

Arco, Idaho is a small city in Butte County, United States. It is notable for its proximity to the Idaho National Laboratory site and for its historical association with the early development of nuclear power. The nearby Experimental Breeder Reactor I produced the first electricity from nuclear power in 1951, and Arco is frequently cited as the first town lit by nuclear-generated electricity.

ARCO stands for Atlantic Richfield Company, an American oil company formed by the 1966 merger of Atlantic Richfield and Richfield Oil Company. It became a major integrated oil producer with refining and marketing operations. In 2000, ARCO was acquired by BP, and the ARCO brand continues in some markets as a BP affiliate or legacy brand.

In music, arco is a term instructing string players to resume playing with the bow after pizzicato or other techniques. It is commonly used in scores to indicate a return to bowed articulation.

In Italian, arco means arch or bow, and it appears in both architectural and musical contexts as a descriptive term.