hidro

Hidro is a combining form used in several languages to indicate relation to water or fluids. It derives from the Greek hydor meaning water, and in English the corresponding prefix is hydro-. In Romance languages such as Spanish and Portuguese, the form hidro- is common and serves a similar function.

As a prefix, hidro attaches to nouns, adjectives, and verbs to form terms describing water-related phenomena, technologies, or processes. In English, common examples include hydroelectric, hydrography, hydrology, hydrogeology, hydroponics, hydrotherapy, hydrochemistry, and hydrobiology. In Spanish or Portuguese, the same concept is expressed with terms such as hidroeléctrico, hidrogeología, hidrobiología, hidroponía, hidroterapia, hidrometeorología, and hidrografía, among others.

The hidro- prefix helps distinguish water-related fields from others, and it appears across disciplines including energy, earth and environmental sciences, agriculture, and medicine. It also participates in broader terminology such as hydrological cycles, and water-related utilities and infrastructure.

See also: hydro- prefix; hydrography; hydroelectricity; hydroponics; hydrobiology; hydrogeology; hydrology.