Where does “ядрышко” come from?

ядрышко (Russian) comes from Russian ядро́, from Proto-Slavic ędro, from Proto-Indo-European h₁en-d(ʰ)r-óm, from Proto-Indo-European h₁én — in.

ядрышко (Russian): a (small) seed, stone, cannonball, shot, nucleus, core, or kernel

Definitions

  1. a (small) seed, stone, cannonball, shot, nucleus, core, or kernel

Ancestry of “ядрышко”, step by step

StepLanguageWordMeaning
1Russianядро́seed, stone of a fruit
2Proto-Slavicędrokernel, core
3Proto-Indo-Europeanh₁en-d(ʰ)r-óm—
4Proto-Indo-Europeanh₁énin
Every word from Proto-Indo-European h₁én →Every word from Proto-Indo-European h₁en-d(ʰ)r-óm →Every word from Proto-Slavic ędro →