Where does “تخته سیاه” come from?

تخته سیاه (Persian) comes from Persian تخته, from Middle Persian tʾhtk', from Middle Persian tʾht', from Proto-Iranian *táxtah, from Proto-Indo-Iranian *táktas, from Proto-Indo-European (s)teg- — to cover; pole, stick, beam.

تخته سیاه (Persian): blackboard

Definitions

  1. blackboard

Ancestry of “تخته سیاه”, step by step

تخته سیاه traces back through two separate lines of ancestry.

via Persian تخته

StepLanguageWordMeaning
1Persianتختهboard; plank; board; blackboard, chalkboard,...
2Middle Persiantʾhtk'tablet, plank, board
3Middle Persiantʾht'throne
4Proto-Iranian*táxtah—
5Proto-Indo-Iranian*táktas—
6Proto-Indo-European(s)teg-to cover; pole, stick, beam

via Persian سیاه

StepLanguageWordMeaning
1Persianسیاهblack; dark-skinned
2PersianـهForms the past participle from the past stem
3Proto-Iranian-akahCreates deadjectival and desubstantival...
4Proto-Iranian-kah—
5Proto-Austronesiankaif
Every word from Proto-Indo-European (s)teg- →Every word from Proto-Indo-Iranian *táktas →Every word from Proto-Iranian *táxtah →