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