Where does “ralador” come from?

ralador (Portuguese) comes from Portuguese ralar, from Portuguese ralo, from Old Portuguese ralo, from Latin rallum, from Latin rādō, from Proto-Italic razdō, from Proto-Indo-European rh₁d-dʰ-, from Proto-Indo-European reh₁d- — to scrape, scratch, gnaw.

ralador (Portuguese): grater; which grates, shreds

Definitions

grater; which grates, shreds

Ancestry of “ralador”, step by step

Step	Language	Word	Meaning
1	Portuguese	ralar	to grate, scrape
2	Portuguese	ralo	drain; sparse; mole cricket
3	Old Portuguese	ralo	—
4	Latin	rallum	scraper
5	Latin	rādō	to scrape, shave, scratch
6	Proto-Italic	razdō	—
7	Proto-Indo-European	rh₁d-dʰ-	—
8	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 →