|Origin:||Greek, from horizein 'to limit'|
the line far away where the land or sea seems to meet the sky
on the horizon! Do not say 'in the horizon'. Say on the horizon.
We could see a ship on the horizon.
the limit of your ideas, knowledge, and experience
broaden/expand somebody's horizons
a course of study that will broaden your horizons
to seem likely to happen in the future:
on the horizon
Business is good now, but there are a few problems on the horizon.