Sexual Dictionary - letter A

Abdomen
the part of the body between the chest and pelvis and encloses the stomach, intestines, liver, spleen, and pancreas.
Also called belly.
Abnormal
deviation from normal. Not typical, usual, or regular.
Abnormal bleeding
menstrual bleeding between periods. Most often can be a symptom of a serious disease.
Abnormality
a phenomenon or occurrence that is not normal. Behavior that breaches the rule or etiquette or custom or morality.
ABO blood group
classification of red blood cells based on the presence or absence of A and B type antigens. According to the type of antigen present, a person may be assigned a blood type of A, B, AB or O. The ABO blood group system is important because it determines who can donate blood to or accept blood from whom. Type A or AB blood will cause an immune reaction in people with type B blood and type B and AB blood will cause a reaction in people with type A blood. Conversely, type O blood has no A or B antigens, so people with type O blood are universal donors. And since AB blood already produces both antigens, people who are type AB can accept any of the other blood types without suffering an immune reaction.
See also Rh factor.
Abortifacient
a substance or device that is used to facilitate an abortion.
Abortion
the premature expulsion of a nonviable fetus from the uterus. A miscarriage.
> This can be done as an artificial procedure, but it often happens naturally when the mother's body expels the fetus because it has died, has genetic or developmental defects, or because of infection or illness in the mother. Natural abortions are typically called miscarriages. Medically induced abortions, which can be completed with surgery or with hormone drugs, are performed because the fetus is unwanted, deformed, not likely to live, or endangers the mother's life or health.
> The four classic symptoms, usually present in each type of abortion, are uterine contractions, uterine hemorrhage, softening and dilatation of the cervix and presentation or expulsion of all or part of the products of conception.
Abscess
a localized collection of pus in part of the body, swollen, formed by tissue disintegration and surrounded by an inflamed area.
Abstinence
to hold back or restrain.
> Sexual abstinence - decision to not have sex. A voluntary refraining from all sexual activities.
Abuse
to cause physical or psychological harm.
> Sexual abuse - 1) the infliction of sexual contact upon a person by forcible compulsion.
> 2) the engaging in sexual contact with a person who is below a specified age or who is incapable of giving consent because of age or mental or physical incapacity.
Acne
an inflammatory disease of the sebaceous glands and hair follicles of the skin that is marked by the eruption of pimples or pustules, especially on the face.
> Acne vulgaris - a form of acne, which results from the bacterial infection of cysts deep within the skin. Generally requires treatment with antibiotics. Without treatment cystic acne may result in scarring.
> Juvenile acne is the acne that occurs during puberty.
Acquaintance rape
forced sexual intercourse by someone known to the victim.
Acquired
gotten through environmental forces. In disease terms, something gotten from someone else. All sexually transmitted diseases (STDs) are acquired.
Acrosome
a cap-like membrane at the leading edge of a spermatozoon, which contains enzymes specifically designed to be capable of female's egg penetration.
Acute (about a disease)
having a rapid onset and following a short but severe course. Not chronic.
Addiction
strong physiological and psychological dependence or habitual use of a substance or practice, despite the negative consequences of its use.
Adenoma
a benign epithelial tumor having a glandular origin and structure.
Adenomyosis
a condition where endometrial glands and supporting tissues are found in the muscular wall of the uterus where it would not occur normally.
Adenopathy
swelling or abnormal enlargement of the lymph nodes. A general term for glandular disease.
Adipose fatty cells
special cells in which fat is stored when a person's caloric intake is greater than that required by one's metabolism.
Adolescence
the period of physical and psychological development from the onset of puberty to complete growth and maturity.
Adrenal glands
the glands that sit on the upper portion of the kidneys and secrete several steroid hormones such as adrenaline, cortisol, aldosterone and adrenal androgens.
Also called suprarenal gland.
Adultery
voluntary sexual intercourse between a married person and a partner other than the lawful spouse.
Adulthood
the period of time in your life after your physical growth has stopped and you are fully developed.
Afterbirth
the placenta and fetal membranes, which is attached to the fetus by the umbilical cord, expelled from the uterus following after the baby is born.
Age of consent
the age at which a person is legally considered competent to give consent, as to sexual intercourse.
Age of majority
the age at which a person is granted by law the rights (as ability to sue) and responsibilities (as liability under contract) of an adult.
AIDS
acronym from acquired immunodeficiency syndrome. A severe (often fatal) immunological disorder caused by HIV virus.
Algolagnia
a perversion (as masochism or sadism) in which pleasure and especially sexual gratification is obtained by inflicting or suffering pain.
Allergen
a substance (such as pollen, glair, or spermicides) that causes an allergy.
Allergy
an abnormally high sensitivity of the human organism in contact with an allergen (such as pollens, foods, or microorganisms). Common indications of allergy may include sneezing, itching, and skin rashes.
Alopecia
hair loss, especially of the head. Baldness.
Amastia
congenital absence of one or both breasts.
Amenorrhea
the absence or suppression of periods (menstruation).
> Primary amenorrhea - missing menstruation in girls who are 16 years old or 3 years after they have shown the first signs of puberty. Usually caused by a hormone imbalance or developmental problem. Secondary amenorrhea - suddenly stops of menstruating for more than 6 months after having normal periods. Hormones are also often responsible.
> Pregnancy amenorrhea - absence of periods during pregnancy.
> Lactation amenorrhea - the absence of normal menstrual cycle (ovulation and menstruation) due to changes the body's physiology by breast feeding after child birth. Some times it is used as a birth control method. Amenorrhea can occur also caused by pregnancy, using contraceptives, stress, some medication, illness, hormonal imbalance, malnutrition, excessive exercise, thyroid malfunction or pituitary gland tumor.
See also menstruation disorders.
Amniocentesis
prenatal diagnosis method performed between 15 and 20 weeks of pregnancy used to diagnose chromosomal abnormalities or genetic disorders. It also can detect the baby's sex. For this a small sample of amniotic fluid is drawn out of the uterus through a very thin needle inserted through abdomen into the uterus and analyzed.
Amniotic fluid
liquid within the amniotic sac protects the fetus from injury and helps to regulate the temperature of the fetus.
Amniotic sac
thin membrane filled with fluid (amniotic fluid) within the abdomen that that surrounds the fetus during pregnancy.
Anal
of, relating to, or near the anus. Pertaining to the anus.
Anal sex (anal intercourse)
human sexual behavior involving the anus and rectum, especially the insertion of the erect penis into the anus. The use of sex toys and other activities involving the anus and rectum can be considered anal sex as well. Individuals who engage in anal intercourse, in which the penis or an object is inserted into thes anus, should use artificial lubrication because of the lack of lubricating glands in the anus.
Anamneses
the complete history recalled and recounted by a patient. Besides clinical examination, anamneses provides information for an accurate diagnosis.
Anaphylaxis
the most severe form of allergy, in which the person's heart and lungs are unable to keep working, and death occurs unless prompt medical attention is obtained.
Androgen
a hormone, such as testosterone or androsterone, produced by testicles and in small quantities by ovaries. Androgens are responsible for physical maturation and controls the development and maintenance of masculine characteristics. Stimulate sebaceous glands, higher levels of androgen hormone being related to acne development.
Androgen deficiency
lower than normal amounts of androgens, particularly testosterone.
Androgyne (androgynous)
one having both male and female sexual characteristics and reproductive organs; at birth an unambiguous assignment of male or female cannot be made.
Also called hermaphrodites.
Androgyny
having both masculine and feminine characteristics, as in attitudes and behaviors that contain features of stereotyped, culturally sanctioned sexual roles of both male and female. Being neither distinguishably masculine nor feminine, as in dress, appearance, or behavior.
Andrology
the branch of medicine concerned with diseases peculiar to the male sex, particularly reproductive system - infertility and sexual dysfunction. The specialist is called andrologist.
Andropause
the period of man's life, occurring usually between the ages of 45 and 55, marked by a drop in testosterone hormone levels secreted by the testicles. The body changes occur and may be accompanied by changes in attitudes and moods, fatigue, a loss of energy, sex drive and physical agility. It is a phenomenon similar to the female menopause.
Androphobia
an abnormal fear or dislike of men or of the male sex, resulting in avoidance of situations where men are present.
Anejaculation
the inability to ejaculate semen despite stimulation of the penis by intercourse or masturbation. In this condition the man is never able to ejaculate semen consciously (total anejaculation) or is able to ejaculate in some situations but not in others (situational anejaculation). Anejaculation can be anorgasmic - men never reach orgasm, or orgasmic - men reach and experience orgasm but do not ejaculate semen, either because there is failure of emission of semen or because there is retrograde ejaculation.
Anemia
a condition in witch the amount of red blood cells or hemoglobin becomes reduced. Since red blood cells deliver oxygen to the various organs and muscles anemia produces fatigue, weakness, headache, and dizziness that can be severe. Caused by different conditions, including iron deficiency. The diagnosis of anemia is confirmed by appropriate blood tests.
Anesthesia
drug-induced loss of feeling or sensation.
Anesthetic
an agent used to produce anesthesia.
Anilingus
sexual stimulation by licking or kissing the anus. A type of oral-genital sexual activity.
Also called rimming.
Lack of protection represents risk of infections.
Anogenital
of, relating to, or involving the anus the genital. Anogenital area includes : anus, vulva, vagina, penis, scrotum, perineum, meatus of the urethra.
Anomaly
a problem or feature not normally present in a healthy individual especially as a result of congenital defects. Unexpected behavior.
Anorexia
a prolonged disorder of eating due to loss of appetite, especially as a result of disease.
Anorexia nervosa - a serious eating disorder primarily of young women in their teens and early twenties that is characterized especially by a pathological fear of weight gain leading to faulty eating patterns, malnutrition, and usually excessive weight loss.
Anorgasmia
the inability to achieve orgasm.
Anorgasmic
person not able to experience an orgasm.
Also called inorgasmic.
Anovular cycle
a menstrual cycle in which a woman menstruates, but she does not ovulate. Anovular cycles are commonly seen during puberty and menopause as the female reproductive system becomes active ( puberty) and inactive ( menopause).
Anovulation
absence of puberty period) or post-maturity ( menopause period), pregnancy, oral contraceptive pills, estrogen and progesterone imbalances, dysfunction of the ovary, excessive exercise and weight loss or stress.
Antibiotic
a chemical substance produced by a microorganism, which has the capacity, in dilute solutions, to inhibit the growth of or to kill other microorganisms. Antibiotics that are sufficiently nontoxic to the host are used as chemotherapeutic agents in the treatment of infectious diseases of man, animals and plants.
Antibody
a protein substance produced in the blood or tissues in response to a specific antigen, such as a bacterium or a toxin, witch destroys or weakens bacteria and neutralizes organic poisons, thus forming the basis of immunity. Neutralize an invading foreign agent or antigen, such as a virus.
Anticoagulant
a substance that prevents the clotting or thickening of blood.
Antidote
remedy or an agent used to neutralize or counteract the effects of a poison.
Antigen
a foreign agent capable of starting an immune response or causing the body to produce antibodies. A substance that when introduced into the body stimulates the production of an antibody. Antigens include toxins, bacteria, viruses, fungi, foreign blood cells, and the cells of transplanted organs.
Also called allergen or immunogen.
Antiseptic
any substance that inhibits the growth and reproduction of disease-causing microorganisms.
Antiviral
any substance capable of destroying or inhibiting the growth and reproduction of viruses.
Anus
the opening at the lower end of the alimentary canal through which solid waste is eliminated from the body. The "butt hole".
Anxiety
an abnormal and overwhelming sense of fear resulting from the anticipation of a realistic or fantasized threatening event or situation, often marked by physiological signs as sweating, tension, and increased pulse.
Aphrodisiac
a chemical agent or odor that stimulate sexual desires.
Areola (breast's)
the circular field of dark colored skin surrounding the nipple.
Arousal
mutual sexual stimulation prior to sexual intercourse.
Arouse
to create sexual interest, either by physical or mental stimulation.
Asexual
1) having no evident sex or sex organs. Sexless. 2) person who lacks physical attraction to the same or opposite sex.
Asexuality
the condition of lacking interest in or desire for sex. an be regarded as a sexual orientation.
Aspermia
inability to produce or ejaculate semen.
Asphyxophilia
a condition in which sexual arousal becomes dependent on being strangled up to the point of passing out.
Asthenia
loss or lack of bodily strength; weakness. Debility.
Asthenospermia
loss or reduction in number of mobile spermatozoa.
Asymptomatic
the condition of having a disease but not experiencing any signs or symptoms. Most of the sexually transmitted diseases (STDs) are asymptomatic.
Atrophy (atrophia)
a wasting or decrease in size of a body organ, tissue, or part owing to disease, pressure, malnutrition, decreased function, hormonal changes, injury, or lack of use (for example : muscular atrophy of a person affected with paralysis).
Autoimmune (disease)
disease characterized by abnormal functioning of the immune system that causes your immune system to produce antibodies against your own tissues.
Autoinoculable
capable of being transmitted from one's own body, from one part of the body to another.
Autoinoculation
a secondary infection originating from a focus of infection already in the body.
Azoospermy
absence of spermatozoa from the seminal fluid.