Where does “сердцебиение” come from?

сердцебиение (Russian) comes from Russian се́рдце, from Old East Slavic сьрдьце, from Proto-Slavic sьrdьce, from Proto-Balto-Slavic śirˀdís, from Proto-Indo-European ḱḗr — heart.

сердцебиение (Russian): heartbeat; heart palpitation

Definitions

  1. heartbeat; heart palpitation

Ancestry of “сердцебиение”, step by step

сердцебиение traces back through two separate lines of ancestry.

via Russian се́рдце

StepLanguageWordMeaning
1Russianсе́рдцеheart
2Old East Slavicсьрдьцеheart
3Proto-Slavicsьrdьceheart
4Proto-Balto-Slavicśirˀdísheart
5Proto-Indo-Europeanḱḗrheart

via Russian бить

StepLanguageWordMeaning
1Russianбитьto beat; бить в ладо́ши ― bitʹ v ladóši ― to clap...
2Proto-Slavicbìtito beat
3Proto-Balto-Slavicbī́ˀteito beat
4Proto-Indo-Europeanbʰeyh₂-to fear, be afraid; to strike, hit; to hew, cut
Every word from Proto-Indo-European ḱḗr →Every word from Proto-Balto-Slavic śirˀdís →Every word from Proto-Slavic sьrdьce →