Where does “specifier” come from?

specifier (Old French) comes from Medieval Latin specifico, from Latin specificus, from Latin faciō, from Latin -torium, from Latin -tōrius, from Latin -tor, from Proto-Italic -tōr, from Proto-Indo-European -tōr.

Ancestry of “specifier”, step by step

StepLanguageWordMeaning
1Medieval Latinspecificodative masculine singular of specificus; dative...
2Latinspecificusspecific, particular
3Latinfaciōto do
4Latin-toriumnominative neuter singular of -tōrius; accusative...
5Latin-tōriusory
6Latin-tor-er
7Proto-Italic-tōrForms agent nouns to verb stems
8Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
9Proto-Indo-European-tor-s
Every word from Proto-Indo-European -tor-sEvery word from Latin -toriumEvery word from Latin -tor