Definition of energy noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈenədʒi//
    ; NAmE NAmE//ˈenərdʒi//
    Energy and physical forces, The power industry, Good health, The universe
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  1. 1  [uncountable] the ability to put effort and enthusiasm into an activity, work, etc. It's a waste of time and energy. She's always full of energy. nervous energy (= energy produced by feeling nervous) See related entries: Good health
  2. 2energies [plural] the physical and mental effort that you use to do something She put all her energies into her work. creative/destructive energies
  3. 3  [uncountable] a source of power, such as fuel, used for driving machines, providing heat, etc. solar/nuclear energy It is important to conserve energy. an energy crisis (= for example when fuel is not freely available) The £500 million programme is centred around energy efficiency and renewable power sources. CollocationsThe environmentEnvironmental damage cause/​contribute to climate change/​global warming produce pollution/​CO2/greenhouse (gas) emissions damage/​destroy the environment/​a marine ecosystem/​the ozone layer/​coral reefs degrade ecosystems/​habitats/​the environment harm the environment/​wildlife/​marine life threaten natural habitats/​coastal ecosystems/​a species with extinction deplete natural resources/​the ozone layer pollute rivers and lakes/​waterways/​the air/​the atmosphere/​the environment/​oceans contaminate groundwater/​the soil/​food/​crops log forests/​rainforests/​treesProtecting the environment address/​combat/​tackle the threat/​effects/​impact of climate change fight/​take action on/​reduce/​stop global warming limit/​curb/​control air/​water/​atmospheric/​environmental pollution cut/​reduce pollution/​greenhouse gas emissions offset carbon/​CO2 emissions reduce (the size of) your carbon footprint achieve/​promote sustainable development preserve/​conserve biodiversity/​natural resources protect endangered species/​a coastal ecosystem prevent/​stop soil erosion/​overfishing/​massive deforestation/​damage to ecosystems raise awareness of environmental issues save the planet/​the rainforests/​an endangered speciesEnergy and resources conserve/​save/​consume/​waste energy manage/​exploit/​be rich in natural resources dump/​dispose of hazardous/​toxic/​nuclear waste dispose of/​throw away litter/(especially British English) rubbish/(especially North American English) garbage/(North American English) trash/​sewage use/​be made from recycled/​recyclable/​biodegradable material recycle bottles/​packaging/​paper/​plastic/​waste promote/​encourage recycling/​sustainable development/​the use of renewable energy develop/​invest in/​promote renewable energy reduce your dependence/​reliance on fossil fuels get/​obtain/​generate/​produce electricity from wind, solar and wave power/​renewable sources build/​develop a (50-megawatt/​offshore) wind farm install/​be fitted with/​be powered by solar panels Wordfinderenergy, fossil fuel, fracking, fuel, hydroelectric, nuclear, oil, power station, solar, wind farm See related entries: The power industry
  4. 4 [uncountable] (physics) the ability of matter or radiation to work because of its mass, movement, electric charge, etc. kinetic/potential, etc. energy Wordfinderamplitude, atom, energy, fission, force, frequency, gravity, molecule, nuclear, physics See related entries: Energy and physical forces, The universe
  5. Word Originmid 16th cent. (denoting force or vigour of expression): from French énergie, or via late Latin from Greek energeia, from en- ‘in, within’ + ergon ‘work’.Extra examples Football gives them an outlet for their energy. He never seems to lack energy. I admire her boundless energy. I don’t have the time or energy to argue with you. I don’t seem to have any energy these days. I will put all my energies into improving the situation. It was late and my energy was beginning to flag. It’s a waste of energy cutting this grass—nobody’s going to see it. My energy levels are still low. No battery could store enough energy to turn over a car’s engine. Prisoners are encouraged to channel their energy into exercise. She always works with energy and enthusiasm. She eventually summoned up the energy to cook dinner. Sugar provides an energy boost. The children are always full of energy. The cost of solar power needs to fall before it makes an impact on the energy market. The country could face an energy crisis if demand continues to rise. The demand for energy and fuel is expected to increase dramatically. The hills sapped his energy and he got off his bike for frequent rests. The kids were running around crazily, working off their surplus energy. The new power station produces vast amounts of energy. The nuclear plant provides a fifth of the nation’s energy supplies. The volunteers’ energy was dissipated by the enormous amounts of paperwork involved in the project. There is a lack of creative energy in the industry. We don’t want to waste our energy trying to persuade people who are just not interested. We must invest our time and energy in the development of our craft. We’re trying to deal with young offenders by channelling their energy into sport rather than crime. With a sudden burst of energy, he ran to the top of the hill. You can judge how healthy you are by the amount of energy you have. You could feel the energy coming back to you from the audience. a government-sponsored renewable energy project attempts to harness solar energy energy-saving features that can reduce energy bills by 50% equipment that offers long-term energy savings state control of the energy industries the change from fossil fuels to renewable energy total energy requirements for the coming year It’s a waste of time and energy. Provide a means of channelling your child’s creative energies. She’s always full of energy. kinetic/​potential energy
See the Oxford Advanced American Dictionary entry: energy