| 1 | English | longitude | Angular distance measured west or east of the... |
| 2 | Old French | longitude | — |
| 3 | Latin | longitūdō | — |
| 4 | Latin | longus | far, long; extended, prolonged; long; tedious,... |
| 5 | Latin | -ē | — |
| 6 | Latin | dis- | asunder, apart, in two; reversal, removal;... |
| 7 | Latin | calceus | shoe |
| 8 | Latin | calx | limestone; chalk; the finish line |
| 9 | Ancient Greek | χάλιξ | small stone, pebble; gravel, rubble |