zigginghttp://www.oed.com/dictionary/zigging_n%3Ftab%3Dmeaning_and_usezigging, n.
First published 1986; not fully revised

ziggingnoun

  1. 1977–
    See zig v.
    Stressed as ˈzigging.
    1. 1977
      The Carter Administration's push for Geneva will surely require much more shoving, not to mention zigging and zagging, in the weeks ahead if it is to succeed.
      Time 17 October 24/3
    2. 1983
      Subtler to see is the line just below, whose zigging and zagging is 180 degrees out of phase with the top line.
      Scientific American July 14/2

Originally published as part of the entry for zig, v.

zig, v. was first published in 1986; not fully revised.