Where does “spindown” come from?

spindown (English) comes from English spin, from Middle English spinnen, from Old English spinnan, from Proto-Germanic spinnaną, from Proto-Indo-European (s)pénh₁-ne-, from Proto-Indo-European (s)penh₁- — to twist; to weave.

spindown (English): A reduction in spin speed

Definitions

  1. A reduction in spin speed

Ancestry of “spindown”, step by step

spindown traces back through two separate lines of ancestry.

via English spin

StepLanguageWordMeaning
1EnglishspinTo rotate, revolve, gyrate (usually quickly); to partially or completely rotate to face another direction
2Middle EnglishspinnenTo spin or convert fibre into yarn; To make...
3Old Englishspinnanto spin
4Proto-Germanicspinnanąto spin
5Proto-Indo-European(s)pénh₁-ne-
6Proto-Indo-European(s)penh₁-to twist; to weave

via English Down

StepLanguageWordMeaning
1EnglishDownusually known as County Down
2Middle Englishdoundown
3Old Englishdūnhill, down; hill, dune; hill, mountain
4Proto-Germanic*dūnā
5Proto-Celticdūnomstronghold, rampart
6Proto-Indo-Europeandʰewh₂-smoke; mist, haze
Every word from Proto-Indo-European (s)penh₁-Every word from Proto-Indo-European (s)pénh₁-ne-Every word from Proto-Germanic spinnaną