Foreign Plurals in English
Some words which come from foreign languages have special plurals.
| Singular | Plural |
| Analysis | Analyses |
| Appendix | Appendices |
| Bacterium | Bacteria |
| Basis | Bases |
| Cactus | Cacti |
| Crisis | Crises |
| Criterion | Criteria |
| Diagnosis | Diagnoses |
| Formula | Formulae / formulas |
| Fungus | Fungi / funguses |
| Hypothesis | Hypotheses |
| Medium | Media |
| Nucleus | Nuclei / nucleuses |
| Oasis | Oases |
| Phenomenon | Phenomena |
| Radius | Radii |
| Stimulus | Stimuli |
| Vertebra | Vertebrae / vertebras |