1.
throughout the world, all over the world
In every part of the world; worldwide.
この歌は世界中で人気がある。
This song is popular all over the world.
世界中を旅したい。
I want to travel around the world.
世界中の人がこのニュースを知っている。
People all over the world know about this news.
世界中 emphasizes that something applies to the entire world.
WORD FORMATION:
世界 (world) + 中 (throughout)
SIMILAR PATTERNS:
- 日本中: throughout Japan
- 町中: throughout the town
- 家中: throughout the house