The line in the distance where the earth and sky seem to meet; also the limit of what you know, see, or experience.
From Old French “orizon,” from Latin “horizon,” from Greek “horizōn (kyklos),” meaning “bounding (circle).” It originally described the circle that seems to surround the observer on Earth.
The horizon isn’t a real edge of the world—it's just where light from the curved Earth stops reaching your eyes. When we talk about “expanding your horizons,” we’re borrowing this visual limit to describe mental limits too.
Complete word intelligence in one call. Free tier — 50 lookups/day.