| 1 | Latin | clima | slope, inclination; A Roman unit of area... |
| 2 | Ancient Greek | κλίμα | a slope, incline, inclination; the supposed slope... |
| 3 | Ancient Greek | κλίνω | to bend, slant; to cause to give way, cause to... |
| 4 | Proto-Indo-European | ḱley- | to shelter, cover; to lean, slope, incline |
| 5 | Proto-Indo-European | ḱel- | to cover; to incline |