Where does “semimeridian” come from?
semimeridian (English) comes from English meridian, from Middle English meridian, from Middle French meridien, from Latin meridianus, from Latin merīdiēs, from Latin medīdiēs, from Latin diēs, from Proto-Italic djēm — to be bright; sky, heaven.
semimeridian (English): The intersection of a surface of revolution and a half-plane through its centre
Definitions
- The intersection of a surface of revolution and a half-plane through its centre
Ancestry of “semimeridian”, step by step
semimeridian traces back through two separate lines of ancestry.
via English meridian
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | meridian | The south; Midday, noon; A great circle passing... |
| 2 | Middle English | meridian | — |
| 3 | Middle French | meridien | midday; the south; celestial meridian |
| 4 | Latin | meridianus | midday, noon; southern |
| 5 | Latin | merīdiēs | midday, noon |
| 6 | Latin | medīdiēs | — |
| 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 |