Where does “pendingin ruangan” come from?

pendingin ruangan (Indonesian) comes from Indonesian pendingin, from Malay pendingin, from Malay dingin, from Classical Malay dingin, from Proto-Malayo-Polynesian *diŋin.

Ancestry of “pendingin ruangan”, step by step

pendingin ruangan traces back through two separate lines of ancestry.

via Indonesian pendingin

StepLanguageWordMeaning
1Indonesianpendinginchiller
2Malaypendingintool for cooling down e.g. ice cubes, air-conditioners etc
3Malaydingincold
4Classical Malaydingin
5Proto-Malayo-Polynesian*diŋin

via Indonesian ruangan

StepLanguageWordMeaning
1Indonesianruanganroom
Every word from Proto-Malayo-Polynesian *diŋin
pendingin ruangan — Etymology, Origin & Word History | Etymology Explorer