Latin word caium comes from Proto-Indo-European *kagʰ-, Proto-Indo-European - -yós, and later Proto-Indo-European *kagʰyóm (Enclosure, hedge.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *kagʰ- | Proto-Indo-European (ine-pro) | |
| - -yós | Proto-Indo-European (ine-pro) | |
| *kagʰom | Proto-Indo-European (ine-pro) | |
| *kagʰyóm | Proto-Indo-European (ine-pro) | Enclosure, hedge. |
| *kagyom | Proto-Celtic (cel-pro) | Pen, enclosure. |
| *kagyom | Gaulish (cel-gau) | |
| caium | Latin (lat) | (Middle Latin) quay, wharf. (Middle Latin) storehouse, shop, workshop. |