noun
horizon
huh-RY-zuhn/həˈraɪzn/
The visible boundary where land or sea appears to meet the sky.
The sea seems to meet the sky at the horizon.

Etymology
The Greek term meant “bounding circle”: the horizon marks the boundary of the visible earth or sea. This image connects a limit of sight with the apparent meeting of land or water and sky.
In context
The horizon stretches forever, a world stripped of color, where the line between earth and sky blurs into one.
More examples
- The sun sinks below the horizon.
- Dark clouds gather on the horizon beyond the fields.
- She watches a distant ship disappear over the horizon.
Forms
horizon · horizons
horizontal adjective — Level and parallel to the horizon.
Similar words
- skyline
- The outline of buildings or hills against the sky.