Word parts change

explain + -ation

Pronunciation change

Noun change

Singular
explanation

Plural
explanations

Explanation is on the Academic Vocabulary List.
  1. (countable) An explanation is the words used to tell somebody how to do something or the reason for something.
    The explanation was long and drawn-out.
  2. (countable) An explanation is the cause of something.
    The explanation for his bad mood was a lack of sleep.

Related words change