transition is on the Academic Word List.

Pronunciation change

Noun change

Singular
transition

Plural
transitions

Transition is on the Academic Vocabulary List.
  1. (countable & uncountable) A transition is a change from one place or situation to another.
    Diana has made the transition from girl to woman.
    The transition from ice to water occurs at 0°C.
    They want at least a five-year transition period.

Verb change

Plain form
transition

Third-person singular
transitions

Past tense
transitioned

Past participle
transitioned

Present participle
transitioning

  1. (transitive) If something transitions, it changes from one place or situation to another.