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1. Ratio of the adjacent side to the hypotenuse of a right-angled triangle
   - cosine
    
2. Lettuce with long dark-green leaves in a loosely packed elongated head
   - cos lettuce, romaine, romaine lettuce

1. For the reason that; on account of
   - as, because, since, for, coz [Brit, informal], cuz [non-standard, informal]

1. An odourless very poisonous gas that is a product of incomplete combustion of carbon
   - carbon monoxide, carbon monoxide gas
    
2. One who refuses to serve in the armed forces on grounds of conscience
   - conscientious objector, conchy [UK, informal], conchie [UK, informal]
    
3. A state in west central United States in the Rocky Mountains
   - Colorado, Centennial State, Colo.

Derived forms: coses

Type of: American state, circular function, contestant, dissenter, dissident, lettuce, monoxide, objector, protester, protestor, trigonometric function

Part of: America, the States, U.S., U.S.A., United States, United States of America, US, USA

Encyclopedia: Cos, Ariège