Where does “двухмерный” come from?

двухмерный (Russian) comes from Russian ме́ра, from Old East Slavic мѣра, from Proto-Slavic měra, from Proto-Balto-Slavic mḗˀrāˀ, from Proto-Indo-European meh₁-reh₂, from Proto-Indo-European meh₁- — to measure.

Ancestry of “двухмерный”, step by step

StepLanguageWordMeaning
1Russianме́раmeasure
2Old East Slavicмѣра—
3Proto-Slavicměrameasure
4Proto-Balto-Slavicmḗˀrāˀ—
5Proto-Indo-Europeanmeh₁-reh₂—
6Proto-Indo-Europeanmeh₁-to measure
Every word from Proto-Indo-European meh₁- →Every word from Proto-Indo-European meh₁-reh₂ →Every word from Proto-Balto-Slavic mḗˀrāˀ →
двухмерный — Etymology, Origin & Word History | Etymology Explorer