World
Meaning
Primary
World
Secondary
Generation
Readings
On'yomi
セイ, セ
Kun'yomi
よ
Notes
Groups
Remarks
There are no circles in kanji!
The outer "circle" is a World globe. The inner "circle" is a continent. The line is the equator.
You can also think of the "circles" as tree rings showing the Generations that a tree lived through. The line is there because your saber せい didn't cut the tree cleanly.