Where does “purgatóir” come from?

purgatóir (Old Irish) comes from Latin pūrgātōrium, from Latin purgātōrius, from Latin -tōrius, from Latin -tor, from Proto-Italic -tōr, from Proto-Indo-European -tōr, from Proto-Indo-European -tor-s.

Ancestry of “purgatóir”, step by step

StepLanguageWordMeaning
1Latinpūrgātōriuma purgative
2Latinpurgātōriusof or related to making clean, purificatory
3Latin-tōriusory
4Latin-tor-er
5Proto-Italic-tōrForms agent nouns to verb stems
6Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
7Proto-Indo-European-tor-s
Every word from Proto-Indo-European -tor-sEvery word from Latin -torEvery word from Latin -tōrius