English word geronto- comes from Proto-Indo-European *ǵerh₂-, Proto-Indo-European - -onts, and later Proto-Indo-European *ǵérh₂onts (Old.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *ǵerh₂- | Proto-Indo-European (ine-pro) | |
| - -onts | Proto-Indo-European (ine-pro) | |
| *ǵérh₂onts | Proto-Indo-European (ine-pro) | Old. |
| *géronts | Proto-Hellenic (grk-pro) | |
| γέρων | Ancient Greek (grc) | |
| geronto- | English (eng) | Pertaining to old age or those of old age. |