Where does “tahun cahaya” come from?

tahun cahaya (Malay) comes from Indonesian cahaya, from Malay cahaya, from Sanskrit छाया, from Proto-Indo-Iranian śćaHyáH, from Proto-Indo-European (s)ḱeh₃ih₂, from Proto-Indo-European (s)ḱeh₃- — darkness, shadow.

tahun cahaya (Malay): lightyear

Definitions

  1. lightyear

Ancestry of “tahun cahaya”, step by step

tahun cahaya traces back through two separate lines of ancestry.

via Indonesian cahaya

StepLanguageWordMeaning
1Indonesiancahayaglow; light; ray
2Malaycahayaglow; light; ray
3Sanskritछायाshadow; shade; shady place; reflection; shading...
4Proto-Indo-IranianśćaHyáHshade, shadow
5Proto-Indo-European(s)ḱeh₃ih₂shadow, shade
6Proto-Indo-European(s)ḱeh₃-darkness, shadow

via Indonesian tahun

StepLanguageWordMeaning
1Indonesiantahunyear
2Malaytahunyear
3Proto-Malayictahunyear
4Proto-Malayo-Polynesiantaqunyear
Every word from Proto-Indo-European (s)ḱeh₃- →Every word from Proto-Indo-European (s)ḱeh₃ih₂ →Every word from Proto-Indo-Iranian śćaHyáH →