Cyclegender has 2 current definitions.
Cyclegender is when your partner/crush is bisexual, omnisexual, or any other sexuality with an attraction cycle, and your gender changes with the current gender they are most attracted to at the time. This can change because of one specific person, or multiple people.
Cyclegender is when you have a set schedule/cycle of when you are certain genders. For example, you could be a transgender male on Mondays and a cis female on Tuesdays, etc. You could also just be a certain gender for a certain amount of time, then switch when that time is over. This is repeated, making a cycle.