Where does “rotomolding” come from?

rotomolding (English) comes from English molding, from Norwegian Nynorsk Molde, from Portuguese moldar, from Portuguese molde, from Spanish molde, from Old Catalan motle, from Latin modulus, from Latin -ulus — Forms agent nouns from verbal roots.

Ancestry of “rotomolding”, step by step

rotomolding traces back through two separate lines of ancestry.

via English molding

StepLanguageWordMeaning
1Englishmoldingpresent participle of mold; The act or process of...
2Norwegian NynorskMolde
3Portuguesemoldarto mold / mould; to hew, work, shape
4Portuguesemoldemould, cast; model, example; printing mould
5Spanishmoldemold, cast; pan, tin
6Old Catalanmotle
7Latinmodulusa small measure or interval; a module; a water...
8Latin-ulusUsed to form a diminutive of a noun, indicating...
9Proto-Italic-olos
10Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
11Proto-Indo-European-e-lós
12Proto-Indo-European-lósForms agent nouns from verbal roots

via English roto

StepLanguageWordMeaning
1Englishrotorotogravure; A Chilean, especially a common man...
2Spanishrotobroken; corrupt, rotten; vulgar, low-class,...
3Latinruptusbroken; ruptured, burst
4Latinrumpōto break, burst, tear, rend, rupture; break asunder, force open
5Proto-Indo-EuropeanHrunéptito be breaking
6Proto-Indo-EuropeanHrewp-to break, tear
7Proto-Indo-EuropeanHrew-to tear out, dig out, open, acquire
Every word from Proto-Indo-European -lósEvery word from Latin -ulusEvery word from Latin modulus