Where does “wattmeter” come from?

Wattmeter is a compound of watt, from Scottish engineer James Watt, and meter, from Ancient Greek μέτρον meaning "measure," ultimately from Proto-Indo-European -trom denoting an agent or instrument.

wattmeter (English): An instrument for measuring electric power in...

Definitions

  1. An instrument for measuring electric power in...

Ancestry of “wattmeter”, step by step

wattmeter traces back through 3 separate lines of ancestry.

via Dutch meter

StepLanguageWordMeaning
1Dutchmetermeasurer; meter; meter, metre
2Middle Dutchmeter
3Middle Dutchmetrijn
4Latinmatrīnagodmother
5Latin-īnusof or pertaining to; -ine
6Proto-Italic-īnosof/belonging to
7Proto-Indo-European-iHnosCreates adjectives of materials
8Proto-Indo-European-no-adjectival suffix

via English Watt

StepLanguageWordMeaning
1EnglishWattWatt, a king of Sussex

via Dutch watt

StepLanguageWordMeaning
1Dutchwattwatt
Every word from Proto-Indo-European -no-
wattmeter — Etymology, Origin & Word History | Etymology Explorer