Tricky Plurals

foreign plurals

Use appropriate foreign (particularly ancient Greek and Latin) plural forms where still in common usage

  • EXAMPLES:

       nucleus / nuclei
       stratum / strata
       genus / genera
       analysis / analyses
       basis / bases
       crisis / crises
       phenomenon / phenomena
       bacterium / bacteria
       millennium / millennia

Note that more than one plural form is sometimes in use for different meanings of a word.

  • EXAMPLES:

       formula / formulas in generalbut formulae in maths/chemistry
       index / indices for mathsbut indexes for books
       appendix / appendices for booksbut appendixes in anatomy
       medium / media in general but mediums for spiritualists
       datum / data in technical casesbut points of data in everyday use

Reference List