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Definition of Heterosexual

Heterosexual: A person sexually attracted to persons of the opposite sex. Or a person who has sexual relations with the opposite sex. Colloquially known as "straight."

The term "heterosexual" can also be an adjective.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=3745
Last Editorial Review: 8/28/2013

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