Where does “เรเดียน” come from?
เรเดียน (Thai) comes from English radian, from English radius, from Latin radius, from English -án, from Middle English -an.
เรเดียน (Thai): radian
Ancestry of “เรเดียน”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | English | radian | In the International System of Units, the derived... |
| 2 | English | radius | The long bone in the forearm, on the side of the... |
| 3 | Latin | radius | ray; staff, rod; spoke |
| 4 | English | -án | — |
| 5 | Middle English | -an | — |