Longman Dictionary of Contemporary English homepage

explanation

noun
     
ex‧pla‧na‧tion S3 W2
1 [uncountable and countable] the reasons you give for why something happened or why you did something:
I think you owe me an explanation (=you should explain to me).
explanation of/for
There is no convincing explanation of the overall structure of the universe.
There was no apparent explanation for the attack.
provide/give an explanation
He gave no explanation for what he was doing that evening.
2 [countable] a statement or piece of writing intended to describe how something works or make something easier to understand
provide/give an explanation
The ability to give clear explanations is the most important quality of the ideal teacher.
explanation of
I'll try and give you a quick explanation of how the machine works.

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