Where does “pañcavīsa” come from?

pañcavīsa (Pali) comes from Sanskrit पञ्चविंशति, from Sanskrit विंशति, from Proto-Indo-Aryan HwiHśatí, from Proto-Indo-Iranian HwiHćati, from Proto-Indo-European h₁wih₁ḱm̥t, from Proto-Indo-European dwi(h₁)dḱm̥ti — two tens; two decades; twenty; two-ten.

Ancestry of “pañcavīsa”, step by step

StepLanguageWordMeaning
1Sanskritपञ्चविंशतिtwenty-five
2Sanskritविंशतिtwenty, a score
3Proto-Indo-AryanHwiHśatítwenty
4Proto-Indo-IranianHwiHćatitwenty
5Proto-Indo-Europeanh₁wih₁ḱm̥t
6Proto-Indo-Europeandwi(h₁)dḱm̥titwo tens; two decades; twenty; two-ten
Every word from Proto-Indo-European dwi(h₁)dḱm̥tiEvery word from Proto-Indo-European h₁wih₁ḱm̥tEvery word from Proto-Indo-Iranian HwiHćati
pañcavīsa — Etymology, Origin & Word History | Etymology Explorer