Where does “hotbed” come from?

Hotbed comes from English hot and bed, where bed derives from Middle English bed, Old English bedd, Proto-Germanic hataz, Proto-Indo-European bʰedʰ-, ultimately from Proto-Indo-European kadʰ-.

hotbed (English): A low bed of earth covered with glass, and heated...

Definitions

  1. A low bed of earth covered with glass, and heated...

Ancestry of “hotbed”, step by step

hotbed 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 hot

StepLanguageWordMeaning
1EnglishhotHaving a high temperature; Causing the air to be...
2Middle Englishhothot
3Old Englishhāthot, fervent, fervid, fierce
4Old Englishhātanto promise; to command, promise; to command, call...
5Hungarian-anAdded to an adjective to create an adverb; Added...
6HungarianUsed to form the third-person singular indicative...
7Proto-Uralic-i
Every word from Proto-Indo-European h₂er-