Where does “Kalimantan Tengah” come from?

Kalimantan Tengah (Indonesian) comes from Indonesian tengah, from Malay tengah, from Proto-Malayo-Polynesian təŋaq — centre; half.

Ancestry of “Kalimantan Tengah”, step by step

Kalimantan Tengah traces back through two separate lines of ancestry.

via Indonesian tengah

StepLanguageWordMeaning
1Indonesiantengahmiddle
2Malaytengahmiddle, midst, centre; middle
3Proto-Malayo-Polynesiantəŋaqcentre; half

via Indonesian Kalimantan

StepLanguageWordMeaning
1IndonesianKalimantancapital: Banjarmasin
Every word from Proto-Malayo-Polynesian təŋaq