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These prefixes are related to water. For example: hydroelectric power is energy made by producing a dam in which water flows through turbines, turning electric generators which then produce energy.

"Hydra," in Greek mythology, was a name given to a mythical water serpent. So, it would seem, "hyd-" or "hydro-" have taken on meanings, as prefixes, closely associated with water.

The prefix is very common in English, and often will be seen in drug names or chemicals, where elements or compounds are bound with water as an ingredient. "Hydrochloric acid," for example, is the acid which helps the stomach to digest food. Many medicines incorporate the prefix, to more accurately depict their chemical composition, such as "naproxen hydrochloride" (an anti-inflammatory drug.)

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16y ago

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