| Word form | shinzō |
| Original script | 心臓 |
| LWT meaning(s) | |
| Word meaning | heart in the medical sense |
| Comments on word | First attested variant shin no zō, shinzō first attested around 1358. |
| Analyzability | analyzable compound |
| Gloss | shin-zō heart-organ |
| Age | Middle Japanese [21] (1185–1603) |
| Lexical stratum | kango |
| Year | bf. 14th century |
| Register | General |
| Numeric frequency | 25.7 |