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alternative press
alternative risk transfer
alternative school
alternative transportation
alternative vote
alternatively
alternator
Althing
altho
althorn
although
alti-
altimeter
Altiplano
altiplano
altissimo
altitude
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alternative energy
al·ter·na·tive en·er·gy


noun 
Definition:
 
naturally generated energy source: any form of energy obtained from the Sun, wind, waves, or another natural renewable source, in contrast to energy generated from fossil fuels
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