ˌkɒntəmˈpleɪʃən ˌkɑntəmˈpleɪʃən ɪkˈspɹɛʃ.ən ˌmænɪfɛˈsteɪʃən ˌɒbzəˈveɪʃ(ə)n ˌɑbzɚˈveɪʃən ɹɪˈflɛkʃən ɹɪˈflɛkʃ(ə)n ˈθɔːtf(ə)lnəs ˈθɔtf(ə)lnəs the image of something as reflected by a mirror (or other reflective material) he studied his reflection in the mirror a likeness in which left and right are reversed the ability to reflect beams or rays a calm, lengthy, intent consideration a remark expressing careful consideration expression without words tears are an expression of grief the pulse is a reflection of the heart's condition the phenomenon of a propagating wave (light or sound) being thrown back from a surface (mathematics) a transformation in which the direction of one axis is reversed