Amalgagender

Amalgagender is a nonbinary identity defined as "A gender that is affected by, or mixed into one's intersex identity." It is a label intended for use by intersex people only. It was presumably coined from the word "amalgam" which means "a combination of different things".

History
"Amalgagender" seems to have been coined by Tumblr user intermisogyny in August 2015.

In 2017, a Bristol Post article about nonbinary terms included "amalgagender", though with a wrong definition, saying that amalgagender people "Are intersex and identify as intersex". A 2018 piece on Psychology Today also defined it incorrectly, as "Intersex people born with a mixed male/female anatomy".

In 2018, Washington state began to allow "X" gender markers on official documents, with the law stating that ""X" means a gender that is not exclusively male or female, including, but not limited to, intersex, agender, amalgagender, androgynous, bigender, demigender, female-to-male, genderfluid, genderqueer, male-to-female, neutrois, nonbinary, pangender, third sex, transgender, transsexual, Two Spirit, and unspecified."