What does waterpower mean?
Waterpower means the power supplied by moving or falling water. For most of history, its clearest application was the waterwheel, which transferred the force of a stream or waterfall to mills and other machinery. The word consequently carries a historical and industrial resonance, recalling the period when watermills were central to grain production, textiles, metalworking, and other crafts. In modern discussion, waterpower can still describe any use of water's energy, although the related term hydropower is often preferred when referring specifically to electricity generated by dams or other water-driven turbines. Waterpower is generally treated as a mass noun: a place may have abundant waterpower, but one does not normally speak of individual “waterpowers” except when referring to separate sources or installations. In an English-language context, the word is used in both British and American English, but it is less common in everyday conversation than the general concept it names.
nounPower obtained from the movement or pressure of water, especially water flowing in a stream or falling from a height to drive machinery. The term can also refer more generally to the energy of water as a natural source.
- Power derived from the movement or pressure of water, especially when used to drive machinery.
- The energy or potential of water as a source of power.
"The old mill continues to draw on the river's waterpower to grind grain."
"The millers invested in a larger wheel to make better use of the stream's waterpower."
"As climate patterns change, engineers are reconsidering the reliability of waterpower in regions with limited rainfall."
The plural is uncommon because waterpower is normally treated as a mass noun; it may be used when referring to distinct water-powered installations or sources.
"The report compared the waterpowers of several historic mills."
For centuries, waterpower turned the slow force of a river into the industrial energy that moved mills, before steam engines and electric motors took over.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of waterpower
Waterpower is an English compound formed from water and power, both of which were established English words before the compound was formed. Its development belongs to the early modern period, when water-driven mills were a major source of mechanical work. The modern related term hydropower was formed later, with hydro- combining Greek roots associated with water, while waterpower continued to retain its broader and more traditional associations.
Related word forms
How waterpower is actually used
Waterpower is now most common in historical, geographical, and technical discussion. It is usually treated as a mass noun rather than as a countable noun.
Easily confused with waterpower
Waterpower is a general term for power derived from moving or falling water and has a strong historical association with mills, while hydropower commonly refers specifically to electricity generated from water.