heptageometry

The story

1. Proto-Afroasiatic*sṗɣ?
2. Proto-Semitic*šabʕ-bor.?
3. Proto-Indo-European*septḿ̥
4. Proto-Hellenic*heptə́
5. Ancient Greekἑπτᾰ́ (heptắ)
6. Englishhepta-
7. Proto-Hellenic*gaya
8. Ancient Greekγαῖᾰ (gaîă)clip.
9. Ancient Greekγῆ (gê)
10. Ancient Greekγεω- (geō-)
11. Proto-Indo-European*med-
12. Proto-Indo-European*meh₁-
13. Ancient Greekμέτρον (métron)
14. Ancient Greekγεωμετρῐ́ᾱ (geōmetrĭ́ā)
15. Latingeōmetria
16. Old Frenchgeometrie
17. Middle Englishgemetry
18. Englishgeometry
19. English todayheptageometry

From hepta- + geometry.