Word parts change

improve + -ment

Pronunciation change

Noun change

Singular
improvement

Plural
improvements

Improvement is on the Academic Vocabulary List.
  1. (countable) An improvement makes something better; it improves something.
    The improvement of this entry was well done.
  2. (uncountable) Improvement is the state of being improved or bettered.
  3. (countable) An improvement is an increase, advance, or growth.