Where does “taitekerroin” come from?
taitekerroin (Finnish) comes from Finnish taite, from English thursday, from Middle English Thursday, from Old English þursdæġ, from Proto-Germanic *Þunras dag, from Latin dies iovis, from Latin diēs, from Proto-Italic djēm — to be bright; sky, heaven.
taitekerroin (Finnish): refractive index
Definitions
- refractive index
Ancestry of “taitekerroin”, step by step
taitekerroin traces back through two separate lines of ancestry.
via Finnish taite
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Finnish | taite | turn; fold |
| 2 | English | thursday | The fifth day of the week in many religious traditions, and the fourth day of the week in systems using the ISO 8601 norm; it follows Wednesday and precedes Friday |
| 3 | Middle English | Thursday | Thursday fifth day of the week |
| 4 | Old English | þursdæġ | Thursday |
| 5 | Proto-Germanic | *Þunras dag | — |
| 6 | Latin | dies iovis | Thursday |
| 7 | Latin | diēs | A day, particularly |
| 8 | Proto-Italic | djēm | accusative singular of *djous |
| 9 | Proto-Italic | *djous | — |
| 10 | Proto-Indo-European | dyḗws | sky, heaven; sky god |
| 11 | Proto-Indo-European | dyéws | sky, heaven |
| 12 | Proto-Indo-European | dyew- | to be bright; sky, heaven |
via Finnish kerroin
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Finnish | kerroin | coefficient, factor; index; multiplier |
| 2 | Finnish | kertoa | to tell; to multiply; to have it |
| 3 | Finnish | kerta | time, occasion; time; times; also once, when the... |
| 4 | Proto-Finnic | kerta | time |
| 5 | Proto-Indo-European | kert- | times; to weave, twist together; time |
| 6 | Proto-Turkic | *keŕ- | to travel, tour |