Where does “số thập phân” come from?
số thập phân (Vietnamese) comes from Vietnamese số, from French sœur, from Middle French soeur, from Old French suer, from Latin soror, from Proto-Italic swezōr, from Proto-Indo-European swésōr, from Proto-Indo-European su-h₁ésh₂-ōr — blood.
số thập phân (Vietnamese): decimal number
Ancestry of “số thập phân”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Vietnamese | số | number; size; amount; count |
| 2 | French | sœur | sister; nun |
| 3 | Middle French | soeur | sister |
| 4 | Old French | suer | nominative singular of seror; to dry |
| 5 | Latin | soror | sister; cousin, daughter of a father's brother;... |
| 6 | Proto-Italic | swezōr | sister |
| 7 | Proto-Indo-European | swésōr | sister |
| 8 | Proto-Indo-European | su-h₁ésh₂-ōr | — |
| 9 | Proto-Indo-European | h₁ésh₂r̥ | blood |