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Not to be confused with Müllerian Agenesis.

The müllerian flag.

The müllerian symbol.

Müllerian is an alternative to the term "biological female" and refers to the phenotypic sex traits of an individual who has ovaries and was not exposed primarily to testosterone in the womb.[1]

Müllerian traits include:

  • A vulva and vagina (PWHV).
  • An uterus and ovaries.
  • The capacity for ovogenesis/the ability to give birth (PWIB), unless if sterile.
  • Has estrogen as one's natural primary sex hormone.
  • Generally has breasts as a secondary sexual characteristic.

Müllerian is not synonymous with AFAB, as some AFAB individuals are intersex, and do not have all of the traits listed. Müllerian can be described as "dyadic female".

The counterpart is wolffian.

Usage

This term should be used in a medical manner, in the same way one would use the term "biological female." It is best not to use this term in a non-medical way unless it is for self identification. For example, one should not call a transgender man "müllerian"; instead, one should call them "AFAB" (or "AXAB/UAB", depending on their history with sex and assigned gender.)

One should not point out an individual as müllerian unless the individual has agreed to have the term used on them. The same goes for the phrase "biological male." Only in medical situations should it matter what someone's birth sex was; otherwise, it is completely up to the individual whether or not they wish to share or use this term.

History

The term appears to have been coined by acro-pluris on Tumblr by August 24, 2018.

Flag and symbol

The flag was created by Tumblr user mourningmogaicrew on August 31st, 2021. The symbol was created on the same day and was based off the woman/female symbol.[2]

References

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