Where does “kärna” come from?

kärna (Swedish) comes from Old Swedish kiærne, from Old Norse kjarni, from Proto-Germanic kernô, from Proto-Indo-European ǵr̥h₂nóm, from Proto-Indo-European ǵr̥h₂nós, from Proto-Indo-European ǵerh₂- — to grow old, to mature.

kärna (Swedish): a seed, a pip; a kernel, a nucleus, a core; a pit

Definitions

a seed, a pip; a kernel, a nucleus, a core; a pit

Ancestry of “kärna”, step by step

kärna traces back through two separate lines of ancestry.

via Old Swedish kiærne

Step	Language	Word	Meaning
1	Old Swedish	kiærne	—
2	Old Norse	kjarni	kernel, core; core
3	Proto-Germanic	kernô	kernel, core
4	Proto-Indo-European	ǵr̥h₂nóm	grain
5	Proto-Indo-European	ǵr̥h₂nós	matured, grown old
6	Proto-Indo-European	ǵerh₂-	to grow old, to mature

via Old Swedish kerna

Step	Language	Word	Meaning
1	Old Swedish	kerna	—
2	Old Norse	kirna	—
3	Proto-Germanic	kirnijǭ	a churn
4	Proto-Germanic	kernǭ	butter tub; creme

Words derived from “kärna”

Every word from Proto-Indo-European ǵerh₂- →Every word from Proto-Indo-European ǵr̥h₂nós →Every word from Proto-Indo-European ǵr̥h₂nóm →