energy

♦♦ en|er|gy /'enərdʒi/ (energies)
1 [N-UNCOUNT]
Energy is the ability and strength to do active physical things and the feeling that you are full of physical power and life.
He was saving his energy for next week's race in Belgium...
2 [N-UNCOUNT]
Energy is determination and enthusiasm about doing things.
You have drive and energy for those things you are interested in.
3 [N-COUNT] usu pl, poss N
Your energies are your efforts and attention, which you can direct towards a particular aim.
She had started to devote her energies to teaching rather than performing...
4 [N-UNCOUNT] oft N n
Energy is the power from sources such as electricity and coal that makes machines work or provides heat.
...those who favour nuclear energy...
Oil shortages have brought on an energy crisis...ki|net|ic en|er|gy
[N-UNCOUNT]
In physics, kinetic energy is the energy that is produced when something moves. (TECHNICAL)

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