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Micropedia - Definitions
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an acronym for "Obstetrics and gynaecology"
object sexuality
Object sexuality or objectum sexuality, in German Objektophilie (OS), is a pronounced emotional and often romantic desire towards developing significant relationships with particular inanimate objects. see Sexual objectification
see object sexuality above
obscene phone call
an unsolicited telephone call where a person derives sexual pleasure by using sexual or foul language to an unknown person
Obscene Publications Act @wp
Since 1857, a series of obscenity laws that have governed what can be published in England and Wales. The classic definition of criminal obscenity is if it "tends to deprave and corrupt,"
any statement, writing or act which strongly offends the prevalent morality of the time
the surgical specialty dealing with the care of women and their children during pregnancy (prenatal period), childbirth and the postnatal period.
obstetrics and gynaecology @wp
are the two surgical–medical specialties dealing with the female reproductive organs in their pregnant and non-pregnant state, respectively, and as such are often combined to form a single medical specialty.
sexually aroused by crowds
Being aroused by eyes
Sexual arousal from biting
odalisque or odilisque
An odalisque was a female slave or concubine in an Turkish harem, particularly present in the household of the Ottoman sultan. In popular use, the word odalisque also may refer to a mistress, concubine or paramour of a wealthy man.
A tooth fetish
or painful ejaculation, is a physical syndrome described by pain or burning sensation of the urethra or perineum during or following ejaculation. Causes include infections associated with Urethritis, Prostatitis, Epididymitis as well as use of anti-depressants.
Oedipal conflict
the conflict between the drives of the id and the drives of the ego {parent-child conflict)
Oedipal fantasy
where a boy has a love fantasy with his mother
Oedipus complex
A Freudian term for a boy/mother love
British spelling for {wk|Estrogen}}
office affair
a love affair (often extra-marital) between two people working in the same office. see Boss/employee
old maid's insanity
{or erotomania) is a type of delusion in which the affected person believes that another person, usually a stranger, high-status or famous person, is in love with him or her
sexual attraction to, or sexual arousal by, smells and odors emanating from the body, especially the sexual areas.
decreased number of sperm (spermatozoa) in the semen.
another word for dildo; a sex toy, often explicitly phallic in appearance, intended for bodily penetration during masturbation or sex with partners.
a Japanese traditional custom in which unattached individuals are introduced to each other to consider the possibility of marriage
sexual attraction, sexual desire, romantic love, or emotional attraction toward people of all gender identities and biological sexes.
a fetish subculture recognized predominantly in Japan, in which participants experience arousal from having a full bladder or a sexual attraction to someone else experiencing the feeling of a full bladder
see Onan
a term usually used to mean masturbation and sometimes coitus interruptus.
in sexuality; urophilia, urolagnia
one child policy @wp
The one-child policy, officially the family planning policy,[1] is the population control policy of the People's Republic of China.
one-night stand
a term more commonly applied to a single sexual encounter, an example of casual sex, in which neither participant has any intention or expectation of a long-term sexual or romantic relationship.
onsen geisha
a term referring to Japanese geisha, or entertainers, who work in onsen (hot spring) resorts or towns. The term onsen geisha has a negative connotation in that the term has come to be synonymous with prostitute.
The study of "Being" - different than metaphysics which in concerned with the study of being in the world.
oogenesis @wp
the creation of an ovum (egg cell)
open marriage
a marriage in which the partners agree that each may engage in extramarital sexual relationships, without this being regarded as infidelity.
ophidicism @wp
defined as the sexual attraction to snakes
Sexual arousal from snakes
any psychoactive chemical that resembles morphine or other opiates in its pharmacological effects.
opponent-process theory @wp
The opponent-process theory was first developed by Ewald Hering. He noted that there are color combinations that we never see, such as reddish-green or yellowish-blue. Opponent-process theory suggests that color perception is controlled by the activity of three opponent systems. In the theory, he postulated about three independent receptor types which all have opposing pairs: white and black, blue and yellow, and red and green. Color-blindness is gender-specific presenting itself in human males, but the gene can be carried by either males or females.
opposite sex
indicating that the person indicated is not of the same sex
oral contraceptive
medications taken by mouth for the purpose of birth control.
oral contraceptive formulations
The main division is between combined oral contraceptive pills, containing both synthetic estrogens and progestogens (progestins), and progestogen only pills (mini-pills). Combined oral contraceptive pills also come in varying types, including varying doses of estrogen, and whether the dose of estrogen or progestogen changes from week to week.
oral contraceptive pill
oral contraceptive in pill or tablet form as opposed to a patch
oral intercourse
sexual activity involving the stimulation of the genitalia of a person by another person using the mouth (including the lips, tongue or teeth) or throat.
oral sex
Sex involving contact between mouth and any other sexual organ.
oral sex during menstruation
see Period play
oral stage
denotes the first psychosexual development stage where in the mouth of the infant is his or her primary erogenous zone.
long-term pain of the testes (balls) that may be caused by injury, infection, surgery, cancer or testicular torsion and is a possible complication after vasectomy.
orchidectomy @wp
a surgical procedure to remove a testicle and the full spermatic cord through an incision in the lower lateral abdomen
Orchidometer (or orchiometer)
a medical instrument used to measure the volume of the testicles.
see orchidectomy above
orchiopexy @wp
a surgery to move an undescended testicle into the scrotum and permanently fix it there. Orchiopexy also describes the surgery used to resolve testicular torsion.
the sudden discharge of accumulated sexual tension during the sexual response cycle, resulting in rhythmic muscular contractions in the pelvic region characterized by sexual pleasure
orgasm control
a sexual technique which involves the maintenance of a high level of sexual arousal for an extended period of time without reaching orgasm, although orgasm can be reached eventually
orgasm denial
a sexual technique which involves the maintenance of a high level of sexual arousal for an extended period of time without reaching orgasm.
refers to any pain that occurs at the time of orgasm.
orgasmic dysfuction
a type of sexual dysfunction in which a person cannot achieve orgasm, even with adequate stimulation. In males, the condition is often related to delayed ejaculation.
orgasmic phase
the conclusion of the plateau phase of the sexual response cycle and is experienced by both males and females.
orgasmic platform
the period of sexual excitement prior to orgasm. The phase is characterised by an increased circulation and heart rate in both sexes, increased sexual pleasure with increased stimulation, and further increased muscle tension. Also, respiration continues at an elevated level
orgasmic spasm
muscle contractions initiated by the orgasmic phase of sexual intercourse
In modern usage, an orgy is a sex party where guests freely engage in open and unrestrained sexual activity or group sex.
a term used by art historians and literary and cultural studies scholars for the imitation or depiction of aspects of Middle Eastern and East Asian cultures (Eastern cultures) by writers, designers and artists from the West.
Orogastric Tube
A tube from mouth to stomach. Used in force feeding scenes. (See Nasogastric Tube)
osmolagnia (also known as Olfactophilia)
sexual arousal by smells and odors emanating from the body, especially the sexual areas.[
Sexual arousal from foul smells
"Over the Knee" spanking were the subject is placed over the lap of the person administering the spanking.
Othello syndrome
or delusional jealousy, is a psychopathological condition in which a person holds a strong delusional belief that their spouse or sexual partner is being unfaithful without having any significant proof to back up their claim.
"Over the Mouth" (a type of gag)
Other World Kingdom
The Other World Kingdom (OWK) is a large estate

Non-penetrative sex or outercourse is sexual activity that usually does not include sexual penetration.
Outing (or Being Outed)
Having your private life disclosed to the public by another person (Link to an article written by Robin Roberts)
A form of dungeon which was accessible only from a hatch in a high ceiling, from which escape was nearly impossible without outside help. The word comes from the French language oublier, "to forget," as it was used for those prisoners the captors wished to forget.
ovarian cancer
a cancerous growth arising from the ovary. Symptoms are frequently very subtle early on and may include: bloating, pelvic pain, difficulty eating and frequent urination, and are easily confused with other illnesses
ovarian cyst
any collection of fluid, surrounded by a very thin wall, within an ovary.[1] Any ovarian follicle that is larger than about two centimeters is termed an ovarian cyst. Such cysts range in size from as small as a pea to larger than an orange.
ovarian follicle
see ovarian cyst above
ovarian ligament
a fibrous ligament that connects the ovary to the lateral surface of the uterus.
ovarian reserve @wp
a term that is used to determine the capacity of the ovary to provide eggs that are capable of fertilization resulting in a healthy and successful pregnancy. With advanced maternal age the number of eggs that can be successfully recruited for a possible pregnancy declines, constituting a major factor in the inverse correlation between age and female fertility.
the surgical removal of an ovary or ovaries.
Ovary (plural; ovaries) - (also see page on 'Sex organs')
A female reproductive organ, often paired, that produces ova and in mammals secretes the hormones estrogen and progesterone.
ovulation @wp
phase of a female's menstrual cycle in which a partially mature ovum that has yet to complete Meiosis
the female haploid reproductive cell (gamete) in oogamous organisms. The egg cell is typically not capable of active movement, and it is much larger than the motile sperm cells. When egg and sperm fuse, a diploid cell (the zygote) is formed, which gradually grows into a new organism.
located in Černá, Czech Republic in 1996 for the purpose of establishing a "A Private State of Supreme Women". For more information see the Wikipedia article.
Ownership Icons
Icons created by House of Tanos to represent the various ownership relationships of masters and slaves. See http://www.ownershipflag.com/icons.
oxygen regulation
see erotic asphyxiation
Oxytocin plays an important role in the neuroanatomy of intimacy, specifically in sexual reproduction, in particular during and after childbirth. It is released in large amounts after distension of the cervix and uterus during labor, facilitating birth, maternal bonding, and, after stimulation of the nipples, lactation. Both childbirth and milk ejection result from positive feedback mechanisms.
Recent studies have begun to investigate oxytocin's role in various behaviors, including orgasm, social recognition, pair bonding, anxiety, and maternal behaviors
refers to sexual urges or arousal involving odors - see olfactophilia

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