Where does “point zéro” come from?

point zéro (French) comes from French point, from Middle French poinct, from Old French point, from Latin pūnctum, from Latin punctus, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

point zéro (French): ground zero

Definitions

  1. ground zero

Ancestry of “point zéro”, step by step

point zéro traces back through two separate lines of ancestry.

via French point

StepLanguageWordMeaning
1Frenchpointpoint; full stop, period; stitch pattern
2Middle Frenchpoinctpoint; not
3Old Frenchpointa sting; a prick; moment; time; dot
4Latinpūnctumpoint
5Latinpunctuspricked, punctured, pierced, having been pricked;...
6Latin-tusForms the past participle of verbs; Forms...
7Proto-Italic-tus
8Proto-Indo-European-tusDerives action nouns from verb roots

via French zéro

StepLanguageWordMeaning
1Frenchzérozero, nought, oh; zero, nought; zero
2ItalianZerozero
3New Latinzerum
4Medieval Latinzephirumzero
5Arabicصِفْرzero, nothing, empty, void; nothing, cipher;...
6Sanskritशून्यzero; cipher, cypher; blank, deserted
7Proto-Indo-EuropeanḱówH-
Every word from Proto-Indo-European -tusEvery word from Latin -tusEvery word from Latin punctus
point zéro — Etymology, Origin & Word History | Etymology Explorer