Where does “tachymeter” come from?

tachymeter (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...

tachymeter (English): A surveying instrument for quickly finding...

Definitions

  1. A surveying instrument for quickly finding...

Ancestry of “tachymeter”, step by step

tachymeter 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 tachy

StepLanguageWordMeaning
1EnglishtachyTachycardia; Tachypnoea
2Englishtachy-fast
3Ancient Greekταχύςswift, quick, fast, rapid; In a short time: soon
4Proto-Indo-Europeandʰn̥gʰ-
5Proto-Indo-Europeandʰengʰ-to cover; to overcast

Words derived from “tachymeter

Every word from Proto-Indo-European -tḗr