frumeindarkjarni
nafnorðkarlkynfrumeindar-kjarni
efnafræði
frumeindakjarni
Fallbeygingar
Eintala
Eintala m. greini
Nf.
frumeindarkjarni
frumeindarkjarninn
Þf.
frumeindarkjarna
frumeindarkjarnann
Þgf.
frumeindarkjarna
frumeindarkjarnanum
Ef.
frumeindarkjarna
frumeindarkjarnans
Fleirtala
Fleirtala m. greini
Nf.
frumeindarkjarnar
frumeindarkjarnarnir
Þf.
frumeindarkjarna
frumeindarkjarnana
Þgf.
frumeindarkjörnum
frumeindarkjörnunum
Ef.
frumeindarkjarna
frumeindarkjarnanna