Where does “electrohydrodynamical” come from?

electrohydrodynamical (English) comes from English hydrodynamical, from English dynamical, from English -ál, from English aldehyde, from German Aldehyd, from Latin alcohol, from Andalusian Arabic كُحُول, from Arabic كحل — kohl, antimony paste.

Ancestry of “electrohydrodynamical”, step by step

StepLanguageWordMeaning
1Englishhydrodynamicalhydrodynamic
2Englishdynamicaldynamic
3English-álOf or pertaining to. Adjectival suffix appended to various words, often nouns, to produce an adjective form. Often added to words of Latin origin, but used with other words also
4EnglishaldehydeAny of a large class of reactive organic...
5GermanAldehydaldehyde
6Latinalcoholkohl, collyrium, stibium; any other powder...
7Andalusian Arabicكُحُول
8Arabicكحلantimony; kohl, stibnite; black coloring of the...
9Arabicكُحْلantimony; kohl, stibnite
10Akkadianguḫlumkohl, antimony paste
Every word from Akkadian guḫlum