Where does “подземие” come from?

подземие (Bulgarian) comes from Bulgarian земя, from Proto-Slavic zemľa, from Proto-Balto-Slavic *źémijāˀ, from Proto-Indo-European dʰéǵʰōm, from Proto-Indo-European -ōm, from Proto-Indo-European -mi.

подземие (Bulgarian): basement, cellar a part of a building or a separate room situated below ground level

Definitions

  1. basement, cellar a part of a building or a separate room situated below ground level

Ancestry of “подземие”, step by step

StepLanguageWordMeaning
1Bulgarianземяearth, soil; land
2Proto-Slaviczemľaearth, soil; land
3Proto-Balto-Slavic*źémijāˀearth
4Proto-Indo-Europeandʰéǵʰōmearth
5Proto-Indo-European-ōmemphatic suffix or postpositive particle
6Proto-Indo-European-mi—
Every word from Proto-Indo-European -mi →Every word from Proto-Indo-European -ōm →Every word from Proto-Indo-European dʰéǵʰōm →