Where does “transnatandus” come from?

transnatandus (Latin) comes from Latin transnato, from Latin natō, from Latin -tō, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Definitions

Ancestry of “transnatandus”, step by step

Step	Language	Word	Meaning
1	Latin	transnato	I swim across or through
2	Latin	natō	to swim or float
3	Latin	-tō	Forms here
4	Latin	-tus	Forms the past participle of verbs; Forms...
5	Proto-Italic	-tus	—
6	Proto-Indo-European	-tus	Derives action nouns from verb roots

Every word from Proto-Indo-European -tus →Every word from Latin -tus →Every word from Latin -tō →