Definition of "explain"
verb:
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To give a sufficiently detailed report about (a) the reason for something, about why something happened, about a causal chain of events; about (b) how something works, about how elements in a system interact; about (c) how to do something, about the steps which need to be accomplished in order to accomplish a certain goal.
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To give a valid excuse for some past behavior.
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To make flat, smooth out.
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To unfold or make visible.
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