Heagender is a term for mutogenders where one's gender changes based on the weather and/or temperature. It includes terms like feugender and glarogender, among others.
History
The term was coined before March 12, 2017 by an unknown user.[1]
Flag
The heagender flag was designed by an anonymous user[1], the the color meanings are a combination of the glarogender and feugender flags, representing fire and ice. The glarogender, feugender, and heagender flags were all based on the glaro- and feu- orientation flags.[2]
Etymology
Hea- comes from the word ‘Heavens’ or 'the sky above'.[3]