transition

英[træn'zɪʃ(ə)n;trɑːn-;-'sɪʃ-] 美[træn'zɪʃən]

1. the act of passing from one state or place to the next

2. an event that results in a transformation

3. a change from one place or state or subject or stage to another

4. a musical passage moving from one key to another

5. a passage that connects a topic to one that follows