Where does “Tropeninsel” come from?

Tropeninsel (German) comes from German Tropen, from Ancient Greek τροπαί, from Ancient Greek τροπή, from Ancient Greek -ή, from Ancient Greek -ᾱ, from Proto-Indo-European -éh₂.

Tropeninsel (German): tropical island

Definitions

tropical island

Ancestry of “Tropeninsel”, step by step

Tropeninsel traces back through two separate lines of ancestry.

via German Tropen

Step	Language	Word	Meaning
1	German	Tropen	tropics; plural of Tropus; plural of Trope
2	Ancient Greek	τροπαί	—
3	Ancient Greek	τροπή	a turning; turning away the enemy, a rout;...
4	Ancient Greek	-ή	suffix of feminine nouns in the [[Appendix:Ancient Greek first declension
5	Ancient Greek	-ᾱ	nominal suffix
6	Proto-Indo-European	-éh₂	—

via German insel

Step	Language	Word	Meaning
1	German	insel	an island, an isle
2	Middle High German	insel	—
3	Latin	Īnsula	—
4	Proto-Italic	enselā	—

Every word from Proto-Indo-European -éh₂ →Every word from Ancient Greek -ή →Every word from Ancient Greek τροπή →