hydro-
French, prefix\i.dʁo\
hydro- is spelled H-Y-D-R-O (5 letters) and appears 7.1 times per million words in written French, the 8,672nd most frequent French word form (wordfreq, 2021 data). Hydro- is a French prefix meaning “hydro-” (English Wiktionary, September 2026). The French Wiktionary (Wiktionnaire) defines it as “Qui se rapporte à l’eau”.
What does hydro- mean in English?
prefix
- 1
hydro-
Source: English Wiktionary, French section, dump of September 2, 2026 (CC BY-SA 4.0).
How French dictionaries define it
prefix: 1. Qui se rapporte à l’eau. 2. Qui se rapporte à un liquide quelconque. 3. Qui se rapporte à l’hydrogène.
noun: 1. Hydravion. 2. (raccourci de hydroélectricité) Électricité, surtout en tant que service.
The definition in the French Wiktionary (Wiktionnaire), in French.
Source: French Wiktionary (Wiktionnaire), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of hydro-
- hydr- alternative before-vowel
- hydros plural
Source: English Wiktionary and French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce hydro-?
- \i.dʁo\
- \i.dʁɔ\
Sources: English Wiktionary, French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
English words that translate to hydro-
Source: the translation tables of the English Wiktionary, dump of September 2, 2026.
How common is hydro- in French?
hydro- appears 7.1 times per million words in written French.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).