macroanatomic

The story

1. Proto-Indo-European*meh₂ḱ-
2. Proto-Indo-European*mh₂ḱrós
3. Proto-Hellenic*makrós
4. Ancient Greekμᾰκρός (măkrós)
5. Frenchmacro-
6. Englishmacro-
7. Proto-Indo-European*h₂en-
8. Proto-Hellenic*aná
9. Ancient Greekᾰ̓νᾰ́ (ănắ)
10. Ancient Greekἀνα- (ana-)
11. Proto-Indo-European*temh₁-
12. Ancient Greekτέμνω (témnō)
13. Ancient Greekἀνατέμνω (anatémnō)
14. Ancient Greekἀνατομή (anatomḗ)
15. Latinanatomia
16. Frenchanatomie
17. Frenchanatomique
18. Latinanatomicus
19. Englishanatomic
20. Englishmacro-
21. Latinanatomia
22. Old Frenchanatomie
23. Middle Englishanatomie
24. Englishanatomy
25. Englishmacroanatomy
26. English todaymacroanatomic

From macro- + anatomic or macroanatomy + -ic.