What is the meaning of Hentai?

A work of anime or manga (or any similar medium) that contains heavily sexual or pornographic art.

hentai; a work of anime or manga (or any similar medium) that contains heavily sexual or pornographic art

hentai (pornographic anime or manga)

hentai (a work of anime or manga—Japanese cartoon art, respectively animated and static—that contains pornography)

hentai (pornographic anime or manga)

pornographic

Rōmaji transcription of へんたい

Rōmaji transcription of ヘンタイ

hentai (a work of anime or manga — Japanese cartoon art, respectively animated and static — that contains pornography)

hentai

hentai (pornographic anime or manga)

hentai (sexual or pornographic anime or manga)

Source: wiktionary.org