Where does “sine” come from?
Sine comes from Latin sinus, borrowed from Arabic جَيْب, ultimately from Proto-Indo-European gʷih₃-éh₂ meaning to live or be alive, with the sense shifting through Sanskrit ज्या and intermediate forms.
sine (English): In a right triangle, the ratio of the length of...
Definitions
- In a right triangle, the ratio of the length of...
Ancestry of “sine”, step by step
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Latin | sinus | a hollow, cavity; curve, fold, winding; gulf, bay |
| 2 | Arabic | جَيْب | pocket; opening in a garment; pocket; bosom, fold... |
| 3 | Sanskrit | ज्या | bow-string, tendon; sine |
| 4 | Sanskrit | जीव | alive, living; life, existence; any living being,... |
| 5 | Proto-Indo-Aryan | ȷ́iHwás | — |
| 6 | Proto-Indo-Iranian | ǰiHwás | alive |
| 7 | Proto-Indo-European | gʷih₃wós | alive, living |
| 8 | Proto-Indo-European | gʷeih₃w- | to live |