Jadehemaec (formerly jadegender) is a gender in the hemospectrum system related to the jade caste of trolls from the webcomic Homestuck. It can be defined as a jade troll kingender, a gender related to the jade caste’s societal role, a gender related to the aesthetics associated with jade trolls, and/or a gender connected to loyalty (particularly in a parental or caretaking way), some degree of femininity, and sharpness.
This term was originally coined as "jadegender" on the Tumblr blog mogai-headcanons on September 9, 2018. The flag was created a the same time.
This term was later revamped with a new name and flag by the same Tumblr user on the Tumblr blog Neopronouns on November 10, 2020.