Where does “hydrodrome” come from?

hydrodrome (English) comes from English drome, from English aerodrome, from English -drome, from Ancient Greek δρόμος, from Ancient Greek -ός, from Proto-Hellenic *-os, from Proto-Indo-European -ós — Creates agent nouns from verb stems, denoting...

Ancestry of “hydrodrome”, step by step

hydrodrome traces back through two separate lines of ancestry.

via English drome

StepLanguageWordMeaning
1EnglishdromeThe crab plover, "Dromas ardeola", of North...
2EnglishaerodromeAn airfield; A flying machine composed of...
3English-dromepath
4Ancient Greekδρόμοςrace, running; racetrack; course, path
5Ancient Greek-όςForms agentive or patientive adjectives and nouns from the o-grade of a verbal root
6Proto-Hellenic*-os
7Proto-Indo-European-ósCreates agent nouns from verb stems, denoting...

via English hydro

StepLanguageWordMeaning
1Englishhydrohydroelectric; hydroponic; hydroelectric power
2Ancient Greekὕδωρwater; rainwater, rain; sweat
3Proto-Hellenic*údōrwater
Every word from Proto-Indo-European -ósEvery word from Ancient Greek -όςEvery word from Ancient Greek δρόμος