1. the act of producing and discharging something, especially gas, light, heat, or sound
2. something that is emitted or given off
3. the production and discharge of electromagnetic radiation by an atom or molecule
Usage: physics

Examples

• The factory’s carbon emissions contribute to air pollution.
• Scientists measured the light emission from the distant star.
• New regulations limit vehicle emissions in the city.
• The emission of toxic gases was detected by sensors.
• Solar panels convert light into electricity through photon emission.
• The company reduced its greenhouse gas emissions by 30%.
• Radio telescopes detect emissions from deep space objects.