Where does “sieropneumotorace” come from?

sieropneumotorace (Italian) comes from Italian pneumotorace, from Italian torace, from Latin thōrax, from Ancient Greek θώραξ — corselet; linen jerkin; coat of mail, cuirass.

Ancestry of “sieropneumotorace”, step by step

Step	Language	Word	Meaning
1	Italian	pneumotorace	pneumothorax
2	Italian	torace	chest; thorax
3	Latin	thōrax	chest, thorax
4	Ancient Greek	θώραξ	corselet; linen jerkin; coat of mail, cuirass

Every word from Ancient Greek θώραξ →Every word from Latin thōrax →Every word from Italian torace →