Where does “pilastrum” come from?

pilastrum (Latin) comes from Latin astrum, from Ancient Greek ἄστρον, from Ancient Greek ἀστήρ, from Proto-Hellenic astḗr, from Proto-Indo-European h₂stḗr, from Proto-Indo-European h₂eHs- — to be/become dry; to burn, to glow; hearth.

pilastrum (Latin): pilaster (rectangular pillar built into a wall)

Definitions

  1. pilaster (rectangular pillar built into a wall)

Ancestry of “pilastrum”, step by step

pilastrum traces back through two separate lines of ancestry.

via Latin astrum

StepLanguageWordMeaning
1Latinastruma star
2Ancient GreekἄστρονA celestial body
3Ancient Greekἀστήρa celestial body; illustrious person; starfish
4Proto-Hellenicastḗrstar
5Proto-Indo-Europeanh₂stḗrstar
6Proto-Indo-Europeanh₂eHs-to be/become dry; to burn, to glow; hearth

via Latin pila

StepLanguageWordMeaning
1Latinpilamortar; pillar; pier
2Latinpīlusa hair
3Latinpīluma pounder, pestle
4Proto-Italicpistlom—
5Proto-Indo-Europeanpis-tlo-—
6Proto-Indo-Europeanpeys-to grind, to crush

Words derived from “pilastrum”

Every word from Proto-Indo-European h₂eHs- →Every word from Proto-Indo-European h₂stḗr →Every word from Proto-Hellenic astḗr →