Pluralian

Pluralian is a word proposed as an umbrella term for people attracted to more than one gender. In other words, it is a synonym for mspec.

Another definition given by the coiner is "One who prioritizes, or is proud of, all of the genders to whom they are attracted equally; one who celebrates their multiple attraction". Pluralian was created for use as both an adjective (e.g. "My pluralian feelings") and a noun (e.g. "The pluralians at the Pride March"). It was coined by dinolove453 on deviantart.

Flag symbolism
"The purple symbolizes neutrality, or combination of attraction to multiple genders (as pink and blue typically symbolize woman and man). The white middle symbolizes that neutrality further, indicating a lack of definitive preference or prioritization amongst one’s attractions. The lily in the middle was chosen as the lily is a true bisexual flower; in the sense that it has both androecium and gynoecium reproductive structures, allowing it to reproduce with all other flowers of their species - no lily is limited to any other lily in terms of reproduction. The yellow of the lily’s petals symbolizes, in addition, the inclusion of nonbinary genders in pluralian attraction (as purple could imply an exclusion thereof)."