Where does “groundspeed” come from?
groundspeed (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.
groundspeed (English): The horizontal speed of an aircraft relative to...
Definitions
- The horizontal speed of an aircraft relative to...
Ancestry of “groundspeed”, step by step
groundspeed 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 ground
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | ground | The surface of the Earth, as opposed to the sky... |
| 2 | Middle English | ground | ground; Earth |
| 3 | Old English | grund | ground; bottom, foundation; abyss, depths |
| 4 | Proto-Germanic | grunduz | ground, foundation |
| 5 | Proto-Indo-European | gʰrem- | to be angry; to sound, bellow, growl, roar, be... |
| 6 | Proto-Indo-European | gʰer- | to rub; to stroke; to grind |