Where does “decibel” come from?

decibel (Romanian) comes from French décibel, from French déci-, from Latin decem, from Latin -nus, from Proto-Italic -nos, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

decibel (Romanian): decibel

Definitions

decibel

Ancestry of “decibel”, step by step

Step	Language	Word	Meaning
1	French	décibel	decibel
2	French	déci-	deci-
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 →