16. Datum- Data
17. Ellipsis- Ellipses
18. Formula- Formulas(Art); Formulae(Sc)
19. Forum- Forums
20. Genus- Genera
21. Genius- Geniuses
22. Hypothesis- Hypotheses
23. Index- Indices
24. Larva- Larvae
25. Memorandum- Memoranda
26. Matrix- Matrices
27. Medium- Media; mediums
28. Metropolis- Metropolises
29. Nucleus- Nuclei
30. Nebula- Nebulae
To be continued…
