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Wiktionary
futanari

n. 1 (context anime manga uncountable English) A genre of Japanese anime or manga featuring hermaphrodite characters, generally with female bodies plus a penis. 2 (context anime manga countable English) A hermaphrodite character in such works.

Wikipedia
Futanari

, is the Japanese word for hermaphroditism, which is also used in a broader sense for androgyny.

Beyond Japan, the term is used to describe a commonly pornographic genre of eroge, comics, and anime which includes characters that show both primary sexual characteristics. In today's language it refers almost exclusively to characters who have an overall feminine appearance. In that case the term is also often abbreviated as futa(s), which is occasionally also used as a generalized term for the works itself.