Where does “explanandus” come from?

explanandus (Latin) comes from Latin explanō, from Latin planō, from Latin plānus, from Ancient Greek πλάνος, from Ancient Greek πλανάω, from Proto-Indo-European pl-néh₂-ti.

Definitions

Ancestry of “explanandus”, step by step

Step	Language	Word	Meaning
1	Latin	explanō	to flatten or spread out
2	Latin	planō	—
3	Latin	plānus	level, flat, even
4	Ancient Greek	πλάνος	wandering
5	Ancient Greek	πλανάω	to make to wander, lead wandering about; to lead...
6	Proto-Indo-European	pl-néh₂-ti	—

Every word from Proto-Indo-European pl-néh₂-ti →Every word from Ancient Greek πλανάω →Every word from Ancient Greek πλάνος →