Pornography (Topical Term)

Am. heritage dict. (porn, also porno: slang: pornography)

Oxford English dictionary online, Jan. 5, 2009 (pornography: the explicit description or exhibition of sexual subjects or activity in literature, painting, films, etc., in a manner intended to stimulate erotic rather than aesthetic feelings; printed or visual material containing this)

Random House college dictionary, c1980 (pornography: obscene literature, art, or photography, esp. that having little or no artistic merit)

Webster's new collegiate dictionary, c1977 (pornography: 1. the depiction of erotic behavior (as in pictures or writing) intended to cause sexual excitement. 2. material (as books or a photograph) that depicts erotic behavior and is intended to cause sexual excitement)