異世界 (Japanese)
Where does "異世界" come from?
The Japanese term 'isekai' is a compound word formed from 'i' meaning 'different' and 'sekai' meaning 'world'. While 'i' serves as a prefix for otherness, 'sekai' has a much deeper history. It originated from Middle Chinese as a translation of the Sanskrit 'lokadhatu', which refers to a region or part of the world. Through this linguistic synthesis, the term evolved to describe the popular 'isekai' genre of fantasy narratives set in another world.
Full etymology tree
- 異世界 (isekai) (Japanese), 'another world'
- compound 異 (i) (Japanese), 'different, other, hetero-'
- compound 世界 (sekai) (Japanese), 'world'
- inherited 世界 (syejH keajH) (Middle Chinese)
- calque लोकधातु (lokadhātu) (Sanskrit)
- inherited 世界 (syejH keajH) (Middle Chinese)
Ancestors
- 異 (Japanese)
- 世界 (Japanese)
Descendants and derived words
- isekai (English)
- isekai (English)
- 이세계 (Korean)
Updated August 2026
More words starting with OTHER
Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris