emission
What's sent forth
Emission is the act of sending something out or the thing that is sent out.
The word appears most often in environmental contexts, where emissions refers to gases and particles released into the atmosphere, especially from vehicles and industrial processes: The new regulations aim to reduce carbon emissions.
In physics, emission describes the release of energy, light, or particles from a source.
The verb emit produces this noun, and both share the sense of something flowing outward from an origin point.
Vehicle's emission outlet
- exhaustUse up entirely
- fumesAirborne chemical irritants
- dieselCompression-ignition fuel
- catalytic converterExhaust detoxification unit
muffler · smog check · hydrocarbons · soot · engine · combustion · automobile · traffic
Discharged liquid waste
- outflowFluid exiting a system
- expelRemove forcibly from membership
- ventOpening for airflow
- exudeDischarge gradually through pores
leakage · seepage · emanation · vapor · steam · diffusion · evaporation · volatilization
Highest-frequency electromagnetic radiation
- X-raysShort-wavelength penetrating light
- ultravioletWavelengths shorter than violet
- infraredHeat-bearing electromagnetic waves
- microwavesElectromagnetic waves for cooking
radio waves · photon · electromagnetic · wavelength · frequency · spectral · luminescence · fluorescence
Sunlight-activated urban pollution
- greenhouse gasesEmissions that trap heat
- carbon dioxideRespiration byproduct, photosynthesis fuel
- sulfur dioxideSO₂ gas compound
- nitrogen oxidesCombustion byproducts harming air quality
particulates · particulate matter · ozone · acid rain · toxins · contaminants · methane · lead
Gradual organic breakdown
- half-lifePeriod for fifty-percent reduction
- nucleusCentral controlling part
- radioisotopeUnstable atomic nucleus variant
- radionuclideDecay-prone atomic nucleus
alpha · beta · gamma · transmutation · Geiger counter · fallout · uranium · plutonium
Point of contention
- circulationMovement through a system
- periodicalRecurring printed publication
- publicationIssued written material
- broadcastTransmitted media signal
press release · statement · announcement · distribution · dissemination
tailpipe
Vehicle's emission outlet
catalytic converter · muffler · smog check · hydrocarbons · soot · engine · combustion · automobile · traffic · smokestack
effluent
Discharged liquid waste
exude · leakage · seepage · emanation · vapor · steam · diffusion · evaporation · volatilization · exhalation
gamma rays
Highest-frequency electromagnetic radiation
- X-raysShort-wavelength penetrating light
- ultravioletWavelengths shorter than violet
- infraredHeat-bearing electromagnetic waves
microwaves · radio waves · photon · electromagnetic · wavelength · frequency · spectral · luminescence · fluorescence · phosphorescence
smog
Sunlight-activated urban pollution
- greenhouse gasesEmissions that trap heat
- carbon dioxideRespiration byproduct, photosynthesis fuel
- sulfur dioxideSO₂ gas compound
nitrogen oxides · particulates · particulate matter · ozone · acid rain · toxins · contaminants · methane · lead · mercury
decay
Gradual organic breakdown
- half-lifePeriod for fifty-percent reduction
- nucleusCentral controlling part
- radioisotopeUnstable atomic nucleus variant
radionuclide · alpha · beta · gamma · transmutation · Geiger counter · fallout · uranium · plutonium · radon
issue
Point of contention
- circulationMovement through a system
- periodicalRecurring printed publication
- publicationIssued written material
broadcast · press release · statement · announcement · distribution · dissemination
- emissionsCO2, carbon footprint, greenhouse gases, methane, carbon offset
- Nuclear ImagingPET scan, technetium-99m, bone scan, iodine-131, F-18
- photochemistryphotochemistry, light absorption, photon, photons, fluorescence
- environmentair pollution, ecology, clean air, biosphere, air quality
- physicsphysics, momentum, atom, acceleration, gravity
- physical phenomenadiffusion, collision, friction, explosion, surface tension
emissionabsorption
Process of taking in
intake · ingestion · inhalation · reception · admission
emissionretention
Continued holding or possession
containment · storage · holding · sequestration · capture
emissionrepression
Unconscious blocking of thoughts
suppression · concealment · withholding · restraint · inhibition
- emissions testingMeasuring vehicle exhaust pollutants
- vehicle emissionsPollutants from motorized transport
- carbon emissionsReleased greenhouse gases
- factory emissionsPollutants released during manufacturing
- CO2 emissionsReleased greenhouse gases
- emissions testVehicle exhaust pollution assessment