Where does “aestās” come from?

aestās (Classical Latin) comes from Proto-Italic aissāts, from Proto-Indo-European h₂éydʰteh₂ts.

Ancestry of “aestās”, step by step

StepLanguageWordMeaning
1Proto-Italicaissātssummer (season)
2Proto-Indo-Europeanh₂éydʰteh₂ts—
Every word from Proto-Indo-European h₂éydʰteh₂ts →Every word from Proto-Italic aissāts →