Aerogender

Aerogender is a term for a gender which changes based on the setting or atmosphere one's in. This can refer literally to things like temperature, weather, time of day, time of year, elevation, etc. It can also refer to a more metaphorical atmosphere, such as one's level of comfort, emotions, or who they're around. Aerogender can be used as an umbrella term or as a specific gender.

History
Aerogender was coined by tumblr user tenderagender on or before July 21, 2014.

Flag
The flag was coined on September 3rd of 2015 by Pride-Flags on Deviantart. It has no confirmed meaning.

Etymology
Aerogender comes from the prefix “aero-” meaning “air,” “atmosphere,” and/or “aviation.”

Resources

 * http://archive.is/UOsIG#selection-2361.12-2367.17
 * http://archive.is/VcjR4#selection-359.0-377.87