Englishfor English speakers
activation
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noun
stimulation of activity in an organism or chemical
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noun
making active and effective (as a bomb)
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noun
(= energizing)
the activity of causing to have energy and be active
loss
Noun
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A loss happens when something goes where people can't find it. People don't know where the thing is or they don't have it any more.
The loss of my keys means I can't go into my house today.
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Loss is when someone's loved one dies. When someone dies, they are no longer with you.
I loss both of my grandparents from old age.
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A loss (shown as L) is charged to the pitcher of the losing team.