Noun
1. the phenomenon of a propagating wave (light or sound) being thrown back from a surface
2. expression without words;
"tears are an expression of grief""the pulse is a reflection of the heart's condition"3. a remark expressing careful consideration
4. a calm lengthy intent consideration
5. the ability to reflect beams or rays
6. a likeness in which left and right are reversed
7. the image of something as reflected by a mirror (or other reflective material);
"he studied his reflection in the mirror"