Where does “kyknukjarni” come from?

kyknukjarni (Faroese) comes from Faroese kjarni, 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.

kyknukjarni (Faroese): nucleus

Definitions

nucleus

Ancestry of “kyknukjarni”, step by step

kyknukjarni traces back through two separate lines of ancestry.

via Faroese kjarni

Step	Language	Word	Meaning
1	Faroese	kjarni	kernel; pit, pip, stone; core, nucleus, essence,...
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 Faroese kykna

Step	Language	Word	Meaning
1	Faroese	kykna	cell
2	Old Norse	kvikna	to quicken, come to life; to be kindled; to...
3	Proto-Germanic	kwiknaną	to come to life
4	Proto-Germanic	kwikwaz	alive; lively, quick
5	Proto-Indo-European	gʷih₃wós	alive, living
6	Proto-Indo-European	gʷeih₃w-	to live

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