Where does “infridhearg” come from?
infridhearg (Irish) comes from Irish dearg, from Old Irish derg, from Proto-Celtic dergos, from Proto-Indo-European dʰerg-, from Proto-Indo-European dʰer- — to support; to hold.
infridhearg (Irish): infrared
Ancestry of “infridhearg”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Irish | dearg | red; live; to redden |
| 2 | Old Irish | derg | red |
| 3 | Proto-Celtic | dergos | red crimson |
| 4 | Proto-Indo-European | dʰerg- | to dim, darken; dim, dull; dark, dusky |
| 5 | Proto-Indo-European | dʰer- | to support; to hold |