Where does “сердечник” come from?

сердечник (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.

сердечник (Russian): inner part of a machine, core of an electromagnet

Definitions

  1. inner part of a machine, core of an electromagnet

Ancestry of “сердечник”, step by step

StepLanguageWordMeaning
1Russianсе́рдцеheart
2Old East Slavicсьрдьцеheart
3Proto-Slavicsьrdьceheart
4Proto-Balto-Slavicśirˀdísheart
5Proto-Indo-Europeanḱḗrheart
Every word from Proto-Indo-European ḱḗr →Every word from Proto-Balto-Slavic śirˀdís →Every word from Proto-Slavic sьrdьce →