horizon

horizon /həˈraɪzn̩/ noun
plural horizons
horizon
/həˈraɪzn̩/
noun
plural horizons
Britannica Dictionary definition of HORIZON
1 
the horizon : the line where the earth or sea seems to meet the sky
— see color picture on this page
2 
[count]
a  : the limit or range of a person's knowledge, understanding, or experience
b  : the limit of what is possible in a particular field or activity

on the horizon

: coming in the near future