1. plural of joule; units of energy or work in the metric system
Usage: physics; science

Examples

• The battery stores 3,600 joules of energy.
• It takes about 4,200 joules to heat one gram of water by one degree Celsius.
• The impact released thousands of joules of kinetic energy.
• Solar panels can generate millions of joules per day.
• The physicist calculated the energy output in joules.
• Food labels sometimes show energy content in both calories and joules.