| Word form | kōgan |
| Original script | 睾丸 |
| LWT meaning(s) | |
| Word meaning | medical term |
| Analyzability | analyzable compound |
| Gloss | kō-gan testicles-ball |
| Age | Early Modern Japanese [21] (1604–1867) |
| Lexical stratum | kango |
| Year | 解体新書 (1774) |
| Register | Formal |
| Numeric frequency | 0 |