1. plural of hydro; a hydroelectric power station or facility
Usage: chiefly Canadian and British English; often used in place names or utility company names
2. plural of hydro; a hotel or resort with therapeutic mineral springs or water treatments
Usage: dated; chiefly British

Examples

• The province's hydros supply most of the region's electricity.
• Canada's major hydros generate clean renewable energy.
• In the early 20th century, wealthy visitors flocked to the hydros for their healing waters.
• The utility company operates several hydros along the river.
• Hydros have become increasingly important for meeting renewable energy targets.