Where does “mmH2O” come from?

mmH2O (Translingual) comes from Translingual mm, from Translingual M, from Ancient Greek Μ, from Ancient Greek Μοῖρα, from Proto-Hellenic móřřā.

Ancestry of “mmH2O”, step by step

mmH2O traces back through two separate lines of ancestry.

via Translingual mm

StepLanguageWordMeaning
1Translingualmmmillimeter
2TranslingualMThousand; The thousandth
3Ancient GreekΜMu; my
4Ancient GreekΜοῖραFates
5Proto-Hellenicmóřřā—

via Translingual H2O

StepLanguageWordMeaning
1TranslingualH2O—
Every word from Proto-Hellenic móřřā →Every word from Ancient Greek Μοῖρα →Every word from Ancient Greek Μ →