Steel is an alloy of iron and other elements, primarily carbon, that is widely used in construction and other applications because of its high tensile strength and low cost.
The turning point of the Pacific Campaign of World War II was the naval Battle of Midway, which occurred between June 4 and June 7, 1942.
turning point. The definition of a turning point is a point in time when something happens that causes a shift or an irrevocable change in direction. An example of a turning point in someone's life is the day a woman finds out she is pregnant. a point at which something changes direction.