Where does “luxmeter” come from?

luxmeter (English) comes from English meter, 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...

luxmeter (English): A light meter

Definitions

  1. A light meter

Ancestry of “luxmeter”, step by step

luxmeter traces back through two separate lines of ancestry.

via English meter

StepLanguageWordMeaning
1EnglishmeterA device that measures things; A parking meter or...
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 English lux

StepLanguageWordMeaning
1EnglishluxIn the International System of Units, the derived...
2Latinlūxlight (of the sun, stars etc.)
3Proto-Italicloukslight
4Proto-Indo-Europeanlewḱ-lynx
5Proto-Indo-Europeanlewk-bright; to shine; to see
Every word from Proto-Indo-European -tḗrEvery word from Ancient Greek -τρονEvery word from Ancient Greek μέτρον