Where does “punctatrix” come from?

punctatrix (Latin) comes from Latin punctum, from Latin punctus, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Definitions

Ancestry of “punctatrix”, step by step

StepLanguageWordMeaning
1Latinpunctumpoint; puncture; moment
2Latinpunctuspricked, punctured, pierced, having been pricked;...
3Latin-tusForms the past participle of verbs; Forms...
4Proto-Italic-tus—
5Proto-Indo-European-tusDerives action nouns from verb roots
Every word from Proto-Indo-European -tus →Every word from Latin -tus →Every word from Latin punctus →