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This is dedicated to those who have too much to memorise… especially those whose first language is not English.

Some atypical singular/plural examples include:

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Medium/media, mitochondrion/mitochondria, flagellum/flagella, bacterium/bacteria

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Nucleus/nuclei, pilus/pili, alveolus/alveoli, bronchus/bronchi, fungus/fungi, locus/loci

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Stoma/stomata, plasmodesma/plasmodesmata

Common prefixes used with SI units

5. Etymology