Where does “tubagem” come from?

tubagem (Portuguese) comes from Portuguese -agem, from Old Portuguese -age, from Old French -age, from Old Occitan -atge, from Latin -āticum.

tubagem (Portuguese): tubing

Definitions

Step	Language	Word	Meaning
1	Portuguese	-agem	Forms uncountable nouns, from verbs, meaning the...
2	Old Portuguese	-age	—
3	Old French	-age	forms nouns with the sense of 'action or result...
4	Old Occitan	-atge	suffix used to form masculine nouns
5	Latin	-āticum	—