Where does “bedwetting alarm” come from?

bedwetting alarm (English) comes from English bedwetting, 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 — to fit, to fix, to put together.

bedwetting alarm (English): A small device inserted into a person's undergarments during sleep that activates an alarm when urine is detected by its sensor, intended to wake the individual so they cease bedwetting

Definitions

  1. A small device inserted into a person's undergarments during sleep that activates an alarm when urine is detected by its sensor, intended to wake the individual so they cease bedwetting

Ancestry of “bedwetting alarm”, step by step

bedwetting alarm traces back through two separate lines of ancestry.

via English bedwetting

StepLanguageWordMeaning
1EnglishbedwettingInvoluntary urination while asleep
2EnglishbedA piece of furniture, usually flat and soft, on...
3Middle EnglishbedA place of rest or sleep
4Old Englishbeddbed
5Proto-West Germanicbadibed
6Persianبدیbadness
7Persianبدbad; not good; evil; poorly, badly
8Middle Persian𐭯𐭥𐭭to; at; in
9Proto-Iranianpati-against, toward; lord
10Proto-Iranian*rādi-
11Proto-Iranian*rād-
12Proto-Indo-IranianHraHdʰ-
13Proto-Indo-EuropeanHreh₁dʰ-to think; to arrange; to succeed, accomplish
14Proto-Indo-Europeanh₂reh₁-to think, reason; to arrange
15Proto-Indo-Europeanh₂er-to fit, to fix, to put together

via English alarm

StepLanguageWordMeaning
1EnglishalarmA summons to arms, as on the approach of an...
2Middle Englishalarme
3Middle Frenchalarme
4Italianall'armea command to take up arms and be ready to fight: to arms!
5Latinarmadefensive arms, armor/armour, shields, weapons of...
6Late Latinarmistitium
7Latinsisteresecond-person singular future passive indicative...
8Proto-Indo-Europeanstísteh₂tito be standing up, to be getting up
9Proto-Indo-Europeansteh₂-to stand
Every word from Proto-Indo-European h₂er-