Meaning of the word "on reflection" in English

What does "on reflection" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

on reflection

US /ɒn rɪˈflɛkʃən/
UK /ɒn rɪˈflɛkʃən/

Phrase

after careful thought or consideration

Example:
On reflection, I think I made the right decision.
He initially refused, but on reflection, he agreed to help.