1) In linguistics, having only one form of the noun for both the male and the female. Broadly conceived, linguistics is the scientific study of human language, and a linguist is someone who engages in this study. ...
Examples:
"chairperson" for chairman
2) a. having characteristics typical of the other sex i.e. intersexual
epicene men synonyms : effeminate, womanish, unmanly, effete, weak.
The Concise Oxford Companion to English Literature; 1/1/2003; MARGARET DRABBLE and JENNY STRINGER; 42 words; Collegiate, Ladies, in Jonson's Epicene, a coterie of domineering women ‘who live from their husbands and give entertainment to all the wits and braveries [beaux] of the time’.