Where does “millihertz” come from?

millihertz (English) comes from English Hertz, from German Hertz, from German Herz, from Middle High German herze, from Old High German herza, from Proto-West Germanic hertā, from Proto-Germanic hertô, from Proto-Indo-European ḱḗr — heart.

millihertz (English): A unit equal to one-thousandth of a cycle per...

Definitions

  1. A unit equal to one-thousandth of a cycle per...

Ancestry of “millihertz”, step by step

millihertz traces back through two separate lines of ancestry.

via English Hertz

StepLanguageWordMeaning
1EnglishHertzAlternative letter-case form of hertz
2GermanHertzhertz; Obsolete spelling of Herz
3GermanHerzheart; hearts; sweetheart, darling
4Middle High Germanherzeheart
5Old High Germanherzaheart
6Proto-West Germanichertāheart
7Proto-Germanichertôheart
8Proto-Indo-Europeanḱḗrheart

via French hertz

StepLanguageWordMeaning
1Frenchhertzhertz
Every word from Proto-Indo-European ḱḗr →Every word from Proto-Germanic hertô →Every word from Proto-West Germanic hertā →