Where does “raschiamento” come from?

raschiamento (Italian) comes from Italian raschiare, from Vulgar Latin rasclare, from Latin rāsculāre, from Latin rāsculum, from Latin rāsus, from Latin rādō, from Proto-Italic razdō, from Proto-Indo-European rh₁d-dʰ- — to scrape, scratch, gnaw.

raschiamento (Italian): curettage

Definitions

curettage

Ancestry of “raschiamento”, step by step

Step	Language	Word	Meaning
1	Italian	raschiare	to clear one's throat; to scrape, scrape off
2	Vulgar Latin	rasclare	—
3	Latin	rāsculāre	—
4	Latin	rāsculum	—
5	Latin	rāsus	scraped, shaved
6	Latin	rādō	to scrape, shave, scratch
7	Proto-Italic	razdō	—
8	Proto-Indo-European	rh₁d-dʰ-	—
9	Proto-Indo-European	reh₁d-	to scrape, scratch, gnaw

Every word from Proto-Indo-European reh₁d- →Every word from Proto-Indo-European rh₁d-dʰ- →Every word from Proto-Italic razdō →