Look up sex in Wiktionary, the free dictionary.
Sex is the trait of certain reproducing organisms producing either male or female gametes.
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Sex or sexual may also refer to:
- Sexual intercourse, the activity of using reproductive organs penetratively
- Human sexual activity, a broad range of reproductive or erotic human practices
- Human sexuality, the way people express themselves in terms of, or experience, the above activities
- Animal sexual behaviour, the reproductive or erotic activities of non-human animals
