Where does “periapsis” come from?
periapsis (English) comes from English apsis, from Latin apsis, from Ancient Greek ἁψίς, from Ancient Greek -σῐς, from Ancient Greek -τις, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.
periapsis (English): The point of a body's elliptical orbit about the...
Definitions
- The point of a body's elliptical orbit about the...
Ancestry of “periapsis”, step by step
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | apsis | A recess or projection, with a dome or vault, at... |
| 2 | Latin | apsis | arch, vault |
| 3 | Ancient Greek | ἁψίς | net, mesh; wheel, hoop, disc; Any curved form:... |
| 4 | Ancient Greek | -σῐς | "suffix forming nouns" |
| 5 | Ancient Greek | -τις | retained after dentals |
| 6 | Proto-Indo-European | -tis | Derives abstract/action nouns from verb roots |