Where does “Nudibranchia” come from?

Nudibranchia (Translingual) comes from Latin nūdus, from Proto-Italic nogʷedos, from Proto-Indo-European nogʷedós, from Proto-Indo-European negʷ- — bare, naked.

Ancestry of “Nudibranchia”, step by step

Step	Language	Word	Meaning
1	Latin	nūdus	—
2	Proto-Italic	nogʷedos	naked
3	Proto-Indo-European	nogʷedós	—
4	Proto-Indo-European	negʷ-	bare, naked

Every word from Proto-Indo-European negʷ- →

Nudibranchia — Etymology, Origin & Word History | Etymology Explorer