Meaning of “explanation” - Learner’s Dictionary

explanation

noun [ C, U ] us uk /ˌekspləˈneɪʃən/

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

What's your explanation for the team's poor performance?
Could you give me a quick explanation of how it works?

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