variable-area \| ̷ ̷ ̷ ̷ ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ ̷ ̷\adjective : being or relating to a motion-picture sound track in which the sounds are represented by an opaque line of varying width that runs parallel to the length of the film < variable-area track > — compare variable-density