- O -
- obscenity
- That which is legally deemed offensive to "accepted" standards
of decency or morality.
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- Oedipus complex
- In Freudian theory, the sexual attraction of a boy to his mother and
simultaneous fear of his father. The male analog of the Electra complex.
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- on the rag
- Pejorative, slang term referring to a woman having her period.
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- oocyte
- The female gamete; an egg or ovum.
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- oogenesis
- The production of oocytes.
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- oophorectomy
- The surgical removal of one or both ovaries.
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- opportunistic infection
- An illness that is considered rare or otherwise difficult to catch but
that can take advantage of a weakened immune system.
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- oral contraceptive
- Pills that contain synthetic estrogen and/or progesterone which cause a
"false pregnancy" thereby preventing ovulation. Used as a
contraceptive, they are commonly referred to as "the pill."
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- oral-genital sex
- Sexual activity in which the mouth is used to stimulate the genitals.
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- orchidectomy
- The surgical removal of the of one or both testes.
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- orgasm
- An intense sensation that occurs at the climax of sexual excitement that
is accompanied by rhythmic muscle contractions and intense pleasure,
followed by release of sexual tensions. In men, orgasm is usually
accompanied by ejaculation.
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- orgasmic platform
- The vasocongestion that occurs in the outer third of the vagina during
sexual arousal.
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- orgy
- A large, and often lavish, gathering of people for the purpose of having
group sex.
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- os
- The opening of the cervix.
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- outer lips
- The fatty pads of tissue lying on either side of the vaginal opening and
inner lips. Also known as the labia majora.
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- ovarian follicle
- A saclike structure in which an ovum develops.
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- ovaries
- The two small organs in the female that produce eggs and hormones; located
above and to the sides of the uterus.
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- oviduct
- Fallopian tube.
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- ovulation
- The release of an egg from the ovary.
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- ovulatory phase
- The phase of the menstrual cycle during which ovulation occurs.
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- ova
- Plural for ovum; eggs; oocytes; the female gametes.
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- ovulate
- To release an egg from the ovary.
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- ovum
- Singular for ova; an egg; an oocyte; the female gamete.
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- oxytocin
- A hormone stimulates strong contractions of the uterus during childbirth;
it is also involved in lactation.
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