Where does “apertans” come from?

apertans (Latin) comes from Latin aperto, from Latin -tō, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Definitions

Ancestry of “apertans”, step by step

StepLanguageWordMeaning
1LatinapertoI lay bare, expose; dative/ablative...
2Latin-tōForms here
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 -tusEvery word from Latin -tusEvery word from Latin -tō