Polygender

Polygender is a term that is refers to having multiple genders. It is sometimes used interchangeably with multigender. However some people define polygender as having more than two genders, so bigender is included in multigender but is not included in polygender. The genders can be experienced fluidly or static.

History
Polygender was first described in 1995 as having "characteristics of multiple genders, deliberately refuting the concept of only two genders."

Flag
The flag was made by DeviantArt user Pride-Flags on July 3rd, 2015. Blue and pink represent masculinity and femininity respectively, and those who feel partially male/female. Yellow is for genders outside the binary. Black is for those who feel partially agender. Grey is for those whose gender(s) change or fluctuate.

Hahahjdgehejeh's version of the flag was created on the 29th of November, 2020. The purple represents being both partially masculine and feminine at once. The pink represents being partially feminine genders. Orange represents being partially a gender that is outside the masc-fem spectrum. The white/light grey represents being partially genderless or agender. Yellow represents being partially a neutral gender. Green represents being multiple genders at once. The blue represents being partially masculine genders.