Where does “edaphology” come from?

edaphology (English) comes from Ancient Greek ἔδαφος, from Ancient Greek ἕδος, from Ancient Greek ἕζομαι, from Proto-Hellenic heďďomai — to sit.

edaphology (English): The ecological relationship of soil with plants,...

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	ἔδαφος	bottom, foundation, base; floor, ground
2	Ancient Greek	ἕδος	a seat; the act of sitting
3	Ancient Greek	ἕζομαι	I sit, sit oneself
4	Proto-Hellenic	heďďomai	to sit