Where does “hydrotaxis” come from?

hydrotaxis (English) comes from English taxis, from Ancient Greek τάξις, from Ancient Greek -σῐς, from Ancient Greek -τις, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

hydrotaxis (English): movement in response to water

Definitions

  1. movement in response to water

Ancestry of “hydrotaxis”, step by step

hydrotaxis traces back through two separate lines of ancestry.

via English taxis

StepLanguageWordMeaning
1EnglishtaxisThe directional movement of an organism in...
2Ancient Greekτάξιςarrangement, ordering; battle array, order of...
3Ancient Greek-σῐς"suffix forming nouns"
4Ancient Greek-τιςretained after dentals
5Proto-Indo-European-tisDerives abstract/action nouns from verb roots

via English hydro

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