Where does “lightspeed” come from?
lightspeed (English) comes from English Speed, from Middle English sped, from Old English spēd, from Proto-West Germanic spōdi, from Proto-West Germanic spōan, from Proto-Germanic spōaną, from Proto-Indo-European spéh₁-, from Proto-Indo-European speh₁- — to succeed, to prosper.
lightspeed (English): The speed of light
Definitions
- The speed of light
Ancestry of “lightspeed”, step by step
lightspeed traces back through two separate lines of ancestry.
via English Speed
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | Speed | The state of moving quickly or the capacity for rapid motion |
| 2 | Middle English | sped | good fortune |
| 3 | Old English | spēd | success; luck, prosperity, success |
| 4 | Proto-West Germanic | spōdi | hurry, rush; success, prosperity |
| 5 | Proto-West Germanic | spōan | to succeed, prosper |
| 6 | Proto-Germanic | spōaną | to prosper, succeed, be happy |
| 7 | Proto-Indo-European | spéh₁- | to succeed, to prosper |
| 8 | Proto-Indo-European | speh₁- | to succeed, to prosper |
via English Light
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | Light | A place name |
| 2 | Middle English | light | The radiation which allows for vision by... |
| 3 | Old English | lēoht | luminous, bright, light, clear, resplendent,... |
| 4 | Proto-West Germanic | leuht | light, bright; light |
| 5 | Proto-Germanic | leuhtą | light |
| 6 | Proto-Indo-European | lewktom | — |
| 7 | Proto-Indo-European | lewk- | bright; to shine; to see |