A person who is sexually attracted to intelligent people. —adj.
Now relocated to Paris after years living in Co. Kildare, husky-voiced chanteuse Marianne Faithfull speaks enthusiastically of a little-known entry in the lexicon of love. The 65-year-old says: 'There is this fantastic new term and I really hope it exists. It's "sapiosexual"... It means being attracted sexually to people's minds as well as their bodies. And there was a lot of it around in the Sixties, let me tell you.'
—Isaac Bickerstaffe, "Now relocated to Paris after...," Irish Daily Mail, April 24, 2012
Here's an e-mail that I sent out a while back on what I mean by sapiosexual....
I want an incisive, inquisitive, insightful, irreverent mind. I want someone for whom philosophical discussion is foreplay. ...I decided all that means that I am sapiosexual....I invented this term while on too little sleep driving up from SF in the summer of '98.
—Torin/Darren WhoEver, "Stoked on sapiosexuality," LiveJournal, March 15, 2003
This term is more or less a blend of the adjectives sapient (wise or sagacious; cf. homo sapiens) and sexual, with an o shoehorned in to mirror terms such as heterosexual and homosexual.