alternative energy
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alternative energy
n
(Environmental Science) a form of energy derived from a natural source, such as the sun, wind, tides, or waves. Also called: renewable energy
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Noun 1. [画像:alternative energy - energy derived from sources that do not use up natural resources or harm the environment]alternative energy - energy derived from sources that do not use up natural resources or harm the environment
energy, free energy - (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs; "energy can take a wide variety of forms"
solar energy, solar power - energy from the sun that is converted into thermal or electrical energy; "the amount of energy falling on the earth is given by the solar constant, but very little use has been made of solar energy"
wind generation, wind power - power derived from the wind (as by windmills)
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