Multibinaryfluid or polybinaryfluid (mesofluid): a more specific subset of genderfluid where your gender fluctuates between both binary genders and/or there is no stark boundary between each one; flowing between girl and boy (man and woman or male and female).

Just means they aren’t (ambi)binarystatic, opposed from nonbinaryfluid (enbyfluid or eafluid), but not necessarily monogenders or comgenders since they can fall on demigender and/or multigender spectra (genderflux). Not necessarily bibinaryfluid/bigenderfluid or mesogenderfluid.

-Kau