English English Wikipedia has an article on:hydrotropismWikipedia Etymology From hydro- + -tropism. Noun hydrotropism (usually uncountable, plural hydrotropisms) (biology) The movement of a plant (or other organism) in response to water, either towards or away from water. Related terms hydrotropic Translations the movement of an organism either towards or away from water French: hydrotropisme (fr) m, hydrotaxie (fr) f Irish: hidreatrópacht f Italian: idrotropismo m Tagalog: danumbaling Wikiwand - on Seamless Wikipedia browsing. On steroids.