Where does “erfðafræði” come from?

erfðafræði (Icelandic) comes from Icelandic -fræði, from Icelandic fræði, from Old Norse frœði, from Proto-Germanic frōdį̄, from Proto-Germanic -į̄, from Proto-Indo-European -íh₂, from Proto-Indo-European -h₂ — Creates collective nouns, which refer to groups...

erfðafræði (Icelandic): genetics

Definitions

genetics

Ancestry of “erfðafræði”, step by step

Step	Language	Word	Meaning
1	Icelandic	-fræði	-logy
2	Icelandic	fræði	science, studies; inflection of fræða: ##...
3	Old Norse	frœði	—
4	Proto-Germanic	frōdį̄	wisdom, understanding
5	Proto-Germanic	-į̄	-th
6	Proto-Indo-European	-íh₂	—
7	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

Every word from Proto-Indo-European -h₂ →Every word from Proto-Germanic -į̄ →Every word from Proto-Germanic frōdį̄ →