REFLEXION

• re‧flec‧tion
• 1 [countable] an image that you can see in a mirror, glass, or water:
• Can you see your reflection in the glass?
• 2 [uncountable and countable] careful thought, or an idea or opinion based on this:
• A moment's reflection will show the stupidity of this argument.
• on/upon reflection
• At first I disagreed, but on reflection (=after thinking carefully about it), I realized she was right.
• 3 [countable] something that shows what something else is like, or that is a sign of a particular situation
• reflection of
• His speech was an accurate reflection of the public mood.
• be a reflection on somebody/something (=show how good or bad someone or something is)
• On some level, a student's grades are a reflection on the teacher.
• 4 [uncountable] the action or process of light, heat, or sound being thrown back from a surface

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.