Where does “decanato” come from?

decanato (Spanish) comes from Spanish decano, from Late Latin decanus, from Latin decem, from Latin -nus, from Proto-Italic -nos, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

decanato (Spanish): deanery

Definitions

deanery

Ancestry of “decanato”, step by step

Step	Language	Word	Meaning
1	Spanish	decano	senior, eldest person; decane
2	Late Latin	decanus	chief of ten people; dean; chief of ten people;...
3	Latin	decem	ten; 10
4	Latin	-nus	-an
5	Proto-Italic	-nos	Creates verbal adjectives from verb stems
6	Proto-Indo-European	-nós	Creates verbal adjectives from roots

Every word from Proto-Indo-European -nós →Every word from Latin -nus →Every word from Latin decem →