The period of time from the heel contact of one foot to the following heel contact of the same foot. (Is usually complete during any 24-hour period.)
Example: Ed's gait cycle was lunar, which was OK since he only hiked in the dark.
And if you want more, for some unhealthy reason, see the "Terminology of Human Walking" at (PDF)
See tabs at the top for definitions and books.
Have anything worth adding? Then try sosayseff+eff@gmail.com
Me? Hard to say. Really hard to say. Probably best not to ask.