Meaning of “explanation” in the English Dictionary

british dictionary

"explanation" in British English

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explanationnoun [ C or U ]

uk /ˌek.spləˈneɪ.ʃən/ us /ˌek.spləˈneɪ.ʃən/

B1 the details or reasons that someone gives to make something clear or easy to understand:

Could you give me a quick explanation of how it works?
What was her explanation for why she was late?
[ + that ] The judge didn't believe his explanation that he had stolen the money in order to give it to charity.
He said, by way of explanation, that he hadn't seen the traffic light change to red.

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(Definition of “explanation” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"explanation" in American English

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explanationnoun [ C/U ]

us /ˌek·spləˈneɪ·ʃən/

the details or other information that someone gives to make something clear or easy to understand:

[ C ] She gave a detailed explanation of the administration’s health-care proposal.

An explanation is also a reason or an excuse for doing something:

[ C ] He had no explanation for his absence the day before.

(Definition of “explanation” from the Cambridge Academic Content Dictionary © Cambridge University Press)