Where does “Mez-Tero” come from?

Mez-Tero (Esperanto) comes from Esperanto mezo, from Italian mezzo, from Latin medius, from Latin locus, from Old Latin stlocus, from Proto-Italic stlokos, from Proto-Indo-European stel- — to put, to place; to locate.

Mez-Tero (Esperanto): Middle-earth, fictional place on Earth where most of the stories of J. R. R. Tolkien are set

Definitions

Middle-earth, fictional place on Earth where most of the stories of J. R. R. Tolkien are set

Ancestry of “Mez-Tero”, step by step

Mez-Tero traces back through two separate lines of ancestry.

via Esperanto mezo

Step	Language	Word	Meaning
1	Esperanto	mezo	middle
2	Italian	mezzo	half, middle; means, method; vehicle
3	Latin	medius	middle; half; moderate
4	Latin	locus	place, spot; a passage of literature; "in the...
5	Old Latin	stlocus	—
6	Proto-Italic	stlokos	—
7	Proto-Indo-European	stel-	to put, to place; to locate

via Esperanto Tero

Step	Language	Word	Meaning
1	Esperanto	Tero	Earth
2	French	Terre	Earth; the Earth
3	Middle French	terre	earth; soil; land, property
4	Old French	terre	earth; soil; land, property
5	Latin	Terra	Terra goddess of the Earth
6	Proto-Indo-European	ters-	dry

Every word from Proto-Indo-European stel- →Every word from Proto-Italic stlokos →Every word from Old Latin stlocus →