Where does “ピコメートル” come from?

ピコメートル (Japanese) comes from Japanese メートル, from French mètre, from Latin metrum, from Ancient Greek μέτρον, from Ancient Greek -τρον, from Proto-Hellenic -tron, from Proto-Indo-European -trom, from Proto-Indo-European -tḗr — Derives agent nouns from verbs, denoting someone...

ピコメートル (Japanese): A unit of measure equal to 10-12 m; (UK) picometre, (US) picometer

Definitions

  1. A unit of measure equal to 10-12 m; (UK) picometre, (US) picometer

Ancestry of “ピコメートル”, step by step

ピコメートル traces back through two separate lines of ancestry.

via Japanese メートル

StepLanguageWordMeaning
1Japaneseメートルa metre
2Frenchmètremetre/meter; first-person singular present...
3Latinmetruma measure
4Ancient Greekμέτρονsomething used to measure: measure, rule, weight;...
5Ancient Greek-τρονForms instrument nouns
6Proto-Hellenic-tronForms instrument nouns from verb stems
7Proto-Indo-European-tromForms nouns denoting a tool or instrument
8Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

via Japanese ピコ

StepLanguageWordMeaning
1Japaneseピコpico
Every word from Proto-Indo-European -tḗrEvery word from Ancient Greek -τρονEvery word from Ancient Greek μέτρον