Where does “vacuum bed” come from?

vacuum bed (English) comes from English bed, from Middle English bed, from Old English bedd, from Proto-West Germanic badi, from Persian بدی, from Persian بد, from Middle Persian 𐭯𐭥𐭭, from Proto-Iranian pati- — to fit, to fix, to put together.

vacuum bed (English): A device consisting of a large, latex envelope attached to a frame, from which most of the air may be removed via a vacuum pump while a person lies inside, which heavily restricts movement and induces asphyxiation for the purposes of stimulation

Definitions

  1. A device consisting of a large, latex envelope attached to a frame, from which most of the air may be removed via a vacuum pump while a person lies inside, which heavily restricts movement and induces asphyxiation for the purposes of stimulation

Ancestry of “vacuum bed”, step by step

vacuum bed traces back through two separate lines of ancestry.

via English bed

StepLanguageWordMeaning
1EnglishbedA piece of furniture, usually flat and soft, on...
2Middle EnglishbedA place of rest or sleep
3Old Englishbeddbed
4Proto-West Germanicbadibed
5Persianبدیbadness
6Persianبدbad; not good; evil; poorly, badly
7Middle Persian𐭯𐭥𐭭to; at; in
8Proto-Iranianpati-against, toward; lord
9Proto-Iranian*rādi-
10Proto-Iranian*rād-
11Proto-Indo-IranianHraHdʰ-
12Proto-Indo-EuropeanHreh₁dʰ-to think; to arrange; to succeed, accomplish
13Proto-Indo-Europeanh₂reh₁-to think, reason; to arrange
14Proto-Indo-Europeanh₂er-to fit, to fix, to put together

via English vacuum

StepLanguageWordMeaning
1EnglishvacuumA region of space that contains no matter; A...
2Dutchvacuüma vacuum
3Latinvacuumaccusative neuter singular of vacuus; an empty...
4Latinvacuusempty, vacant, unoccupied; devoid or free of,...
5Latin-uusforms adjectives on verbal stems
6Proto-Italic*-wos
7Proto-Indo-European-wósCreates adjectives from verb stems
Every word from Proto-Indo-European h₂er-