-sis
EnglishEdit
EtymologyEdit
Ultimately from Ancient Greek -σις (-sis, “forms noun of action”), often via Latin or French.
SuffixEdit
-sis (plural -ses)
- forming nouns of action or process
- (medicine) forming nouns of condition
Usage notesEdit
Not very productive: primarily used for borrowed terms from Ancient Greek, though there are also modern coinages based on Ancient Greek roots.