Proto-Slavic *ędro

→ Bulgarian ядро (derived)

→ Czech jádro (inherited)

→ Lower Sorbian jědro (inherited)

→ Kazakh ядро (derived)

→ Macedonian јадро (inherited)

→ Polish jądro (inherited)

→ Polabian jǫdrĕ (inherited)

→ Russian ядро (inherited)

→ Sanskrit आण्ड (cognate)

→ Serbo-Croatian jedro (inherited)

→ Serbo-Croatian једро (inherited)

→ Slovak jadro (inherited)

→ Silesian jōndro (inherited)

→ Old Czech jádro (inherited)