Where does “megameter” come from?

megameter (English) comes from English megametre, from English metre, from French mètre, from Latin metrum, from Ancient Greek μέτρον, from Ancient Greek -τρον, from Proto-Hellenic -tron, from Proto-Indo-European -trom — Derives agent nouns from verbs, denoting someone...

megameter (English): US spelling of megametre; An instrument for...

Definitions

  1. US spelling of megametre; An instrument for...

Ancestry of “megameter”, step by step

megameter traces back through two separate lines of ancestry.

via English megametre

StepLanguageWordMeaning
1EnglishmegametreA distance of 1,000 km. Symbol: Mm
2EnglishmetreThe basic unit of length in the International...
3Frenchmètremetre/meter; first-person singular present...
4Latinmetruma measure
5Ancient Greekμέτρονsomething used to measure: measure, rule, weight;...
6Ancient Greek-τρονForms instrument nouns
7Proto-Hellenic-tronForms instrument nouns from verb stems
8Proto-Indo-European-tromForms nouns denoting a tool or instrument
9Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

via English meter

StepLanguageWordMeaning
1EnglishmeterA device that measures things; A parking meter or...
2Old Frenchmetreto put, to place
3Latinmittōto send, dispatch, cause to go, let go, release, discharge
4Proto-Italicmeitōto put forth, put out
5Proto-Indo-Europeanmeyth₂-to hurt; to exchange, remove; to replace, to...
Every word from Proto-Indo-European -tḗrEvery word from Ancient Greek -τρονEvery word from Ancient Greek μέτρον