stereogeometry

The story

1. Proto-Indo-European*ster-
2. Ancient Greekστερεός (stereós)
3. Ancient Greekστερεο- (stereo-)
4. Englishstereo-
5. Proto-Hellenic*gaya
6. Ancient Greekγαῖᾰ (gaîă)clip.
7. Ancient Greekγῆ (gê)
8. Ancient Greekγεω- (geō-)
9. Proto-Indo-European*med-
10. Proto-Indo-European*meh₁-
11. Ancient Greekμέτρον (métron)
12. Ancient Greekγεωμετρῐ́ᾱ (geōmetrĭ́ā)
13. Latingeōmetria
14. Old Frenchgeometrie
15. Middle Englishgemetry
16. Englishgeometry
17. English todaystereogeometry

From stereo- + geometry.