Gendergas is a term with multiple definitions. The first definition is gender which "expands to fill the entire container". This definition was created as a joke and no clarification was given.
An alternate, more serious definition is when a genderfluid and/or fluidflux person's gender changes so rapidly and confusingly that the person cannot keep up with it. Their gender feels like a fleeting gas or mist with many particles flying around that don't settle down. It can, but does not have to be, triggered by instances such as:
- An exciting or upsetting experience
- PTSD, trauma or anxiety attacks
- Certain states of mind
- Side effects of plurality (in the case of systems).
Gendergas does not usually refer to a specific gender identity, but rather is a modifier to ones current gender experience or to describe a certain event or occurence, for example: "I was so happy in that moment that I became gendergas for a while." The feeling of gendergas does not have to be a negative experience. It can also feel like an adventure or like suddenly acquiring a collection of many interesting and comfortable genders.
The original definition was coined on May 27, 2014 by Tumblr user askanonbinary. It was not clarified what the "container" was supposed to be, as this definition was created as a joke.
Gendergas was independently coined by Wiki user WasabiBuns on June 20th, 2021, giving it a more serious definition. It originated from a conversation on the LGBTQA+ Wiki Discord server on June 17th, 2021, where a user humorously asked several genderfluid people at what temperature their gender would become "gender solid" or "gender gas". WasabiBuns later decided to give both gendergas and genderfrozen an actual meaning related to his own experience with genderfluidity.
A flag for the original definition of the term was created by arco-pluris on beyond-mogai-pride-flags on December 3, 2019. The flag uses colors from images of noble gases.
The flag for the second definition was created by Wiki user WasabiBuns on July 6th, 2021. It is based on the genderfluid flag, but the colors were lightened to resemble the airiness and lightness of gas.