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See also: sis, SIS, sís, šis, šīs, and şiş



Ultimately from Ancient Greek -σις ‎(-sis, forms noun of action), often via Latin or French.


-sis (plural -ses)

  1. forming nouns of action or process
    dialysis, noesis, prosiopesis
  2. (medicine) form noun of condition
    psoriasis, sepsis

Usage notes[edit]

Not very productive, primarily used for borrowed terms from Ancient Greek, also some modern coinages on Ancient Greek roots.

Derived terms[edit]




  1. dative masculine plural of -sus
  2. dative feminine plural of -sus
  3. dative neuter plural of -sus
  4. ablative masculine plural of -sus
  5. ablative neuter plural of -sus
  6. ablative feminine plural of -sus