Halation

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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.
     [1913 Webster]