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