An agender noun includes both the masculine and feminine forms.
2000 July 28, Miriam Wolfe, “Re: The Genealogy of J---s Question”, in alt.messianic (Usenet):
All I understand is that G-d is amorphous, agender, etc. so "image" can't be a physical or gender or sexual thing.
2000 November 21, abbycat2 [username], “Re: God and Grammar”, in soc.religion.quaker (Usenet):
"He" has been used as the default pronoun, and as I said, unfortunately there is no agender equivalent to he/she, as "it" is usually equated with something without life, or at least of a life form considered to be less intelligent (that in itself is negotiable, but this is for a different topic).
2005 July 20, man_in_black529 [username], “Re: Homosexuality and the Bible”, in alt.politics.democrats (Usenet):
But despite this near-universality of gender, cultures can have transgender, agender, and hypergender individuals.
2019 May 29, Amy Harmon, “Which Box Do You Check? Some States Are Offering a Nonbinary Option”, in The New York Times, archived from the originalon8 June 2019: