資料來源 : pyDict

照相底片上顯現的光輪狀暈,暈光,白色模糊影像

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Halation \Ha*la"tion\ (h[asl]*l[=a]"sh[u^]n), n. (Photog.)
   An appearance as of a halo of light, surrounding the edges of
   dark objects in a photographic picture.