multicompartment

The story

1. Proto-Indo-European*mel-
2. Proto-Indo-European*ml̥tós?
3. Proto-Italic*moltos
4. Latinmultus
5. Latinmultī
6. Middle Englishmulti-
7. Englishmulti-
8. Proto-Indo-European*ḱe?
9. Proto-Indo-European*ḱóm
10. Proto-Italic*kom
11. Proto-Italic*kom-
12. Latincom-
13. Proto-Indo-European*perh₃-
14. Proto-Indo-European*pérh₃tis?
15. Proto-Italic*partis
16. Latinpars
17. Latinpartiō
18. Latinpartior
19. Latincompartīrī
20. Italiancompartire
21. Italiancompartimento
22. Middle Frenchcompartiment
23. Englishcompartment
24. English todaymulticompartment

From multi- + compartment.