Where does “microhertz” come from?

microhertz (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.

microhertz (English): A unit of frequency equal to one millionth of a...

Definitions

  1. A unit of frequency equal to one millionth of a...

Ancestry of “microhertz”, step by step

microhertz 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 English micro

StepLanguageWordMeaning
1EnglishmicroSmall, relatively small; short form of...
2Ancient Greekμικρόςlittle, small
3Proto-Indo-Europeanmēy-soft, tender, dear
Every word from Proto-Indo-European ḱḗr