Sexual Dictionary - letter L

Labia (labium)
any of four folds of tissue of the female external genitalia named :
  • labia majora - the two outer rounded folds of adipose tissue that lie on either side of and sorrounding the vaginal opening and form the external lateral boundaries of the vulva
  • labia minora - the two thin inner folds of skin within the vestibule of the vagina enclosed within the cleft of the labia majora
Labor
the period beginning with contractions of the uterus and ending with the expulsion of the fetus or infant and the placenta.
Also called childbirth.
Lactation
breastfeeding, or the secretion of breast milk.
Lactobacillus
the bacteria normally present in the mouth, intestinal tract and vagina. Lactobacillus produces lactic acid and act to prevent vaginitis by inhibiting the growth of yeast.
Laparoscopy
a procedure using an endoscope inserted through an abdominal incision for the purpose of diagnosis, biopsy or surgery.
Laryngeal
of, relating to, affecting or situated in the larynx.
Larynx
the larynx is an organ, part of the respiratory tract, situated in the neck, involved in control of breathing protection of the trachea and sound production. Larynx has walls of cartilage and muscle. Houses the vocal cords and is situated at the point where the upper tract splits into the trachea and the esophagus.
Latent syphilis
a stage of syphilis where there are no outward symptoms.
Latex
a type of rubber used to make condoms.
Lesbian
a homosexual woman who prefer to have romantic and sexual relationships only with other women.
Lesbianism
(homosexuality) woman behavior oriented only toward romantic and sexual relationship with another woman. It is a form of sexual orientation.
Lesion
any wound or injury, localized pathological change in a bodily organ or tissue, infected or diseased patch of skin.
Leucocyte (leukocyte)
see white blood cell.
Leucocytosis (leukocytosis)
an abnormal increase in the number of white blood cells in the blood as a result of infection or inflammation.
Leucorrhea (leukorrhea)
discharge of white mucous material from the vagina. All women have a vaginal discharge. Healthy discharge may appear clear, cloudy white, and/or yellowish when dry on clothing. Changes in normal discharge can occur for many reasons like menstrual cycle, stress, nutrition, pregnancy, usage of medications, and sexual arousal. Any changes in color or amount of vaginal discharge may be a sign of a vaginal infection or a local lesion. An unhealthy discharge may be persistent, increased discharge, white, clumpy discharge (cottage cheese like), grey-white or yellow-green discharge with a foul (fishy) odor, thin, watery discharge. Also unhealthy discharges are accompanied by itching, rash, soreness or burning sensation during urination.
Libido
manifestation of the sexual desire as an instinctual energy or force.
Lipoma
a benign tumor composed of fatty tissue. The tendency to develop lipomas is generally hereditary. Lipomas are soft to the touch, sometimes moveable, and are generally painless. A lipoma may be removed by simple excision or liposuction.
Liposuction
a cosmetic surgical procedure which removes fat from certain places of the body, typically abdomen, thighs and buttocks by liquefying it and removing it through a hollow needle.
Lips
see labia.
Love doll
a type of sex toy that resembles a man or a woman and has anatomically correct parts.
Lubricant
a substance that reduce the friction between penis and vagina or anus durring intercourse. Can be natural - secreted by penis and vagina or artificial. For protected sex MUST be used water-based lubricants because oil-based lubricant can damage the condom.
Lubricated condom
a condom that has lubricant put on it before it is sealed in a package.
Lubrication
process that occurs within 10 to 30 seconds of a woman/man becoming sexually aroused. In woman the vascular engorgement of the tissues that lie beneath the vaginal wall produce a vaginal lubrication on the inner walls of the vagina. In man the natural lubrication is represented by the small amount of fluid secreted by the Cowper's glands. Lack of lubrication lead to painful intercourse. It is possible to use artificial lubricants to assist in achieving adequate lubrication.
Luteal phase
the second half of the menstrual cycle after ovulation. The corpus luteum secretes progesterone which prepares the endometrium for the implantation of an egg. If fertilization does not occur then menstrual flow begins.
Also called secretory phase.
Luteinizing hormone (LH)
a hormone produced by the pituitary gland. In the women triggers ovulation and stimulates the corpus luteum to make progesterone. About 36 hours before ovulation, the level of luteinizing hormone will greatly increase in the blood and subsequently the urine. This increase in LH may be detected by testing the urine. In the man LH is necessary for spermatogenesis and for the production of testosterone (Leydig cell function).
Lust
a very strong sexual desire.
Lymph
a thin, transparent, slightly yellow, coagulable fluid containing white blood cells (lymphocytes) and antibodies and is circulated throughout the body by the lymphatic system. is conveyed to the blood stream by lymphatic vessels.
Lymph nodes
small, bean-shaped organs located throughout the body along the channels of the lymphatic system, that help to filter excess fluid, bacteria, and by-products of infections. Most lymph nodes are clustered in specific areas of the body, such as the mouth, neck, lower arm, armpit, and groin.
Lymphadenopathy
a chronic, abnormal enlargement of the lymph nodes, usually associated with disease.
Lymphatic system
the interconnected system of spaces and vessels between body tissues and organs by which lymph circulates throughout the body. The lymphatic system transports infection-fighting cells - lymphocytes.
The lymphatic system consists of the :
  • lymphatic vessels - a network of thin tubes that branch into tissues throughout the body and carry lymph
  • lymphoid tissue - the spleen, thymus and bone marrow. The spleen acts to filter and modify the blood while the bone marrow and thymus act to produce and mature lymphocytes and other immune cells
  • lymph nodes - small organs along the network of vessel. Clusters of lymph nodes are found in the underarms, groin, neck, chest, and abdomen and act as filters, with an internal honeycomb of connective tissue filled with lymphocytes that collect and destroy bacteria and viruses. When the body is fighting an infection, these lymphocytes multiply rapidly and produce a characteristic swelling of the lymph nodes (lymphadenopathy)
Lymphocyte
a type of white blood cell involved in the human body's immune system and playing an important and integral part of the body's defenses.
There are two broad categories of lymphocytes, namely T cells and B cells. T-cells are responsible for cell mediated immunity whereas B-cells are responsible for humoral immunity (relating to antibodies). T-cells are named such because these lymphocytes mature in the thymus and B-cells mature in bone marrow.
Lymphogranuloma venereum (LGV)
a sexually transmitted disease caused by subtypes of Chlamydia Trachomatis. that affects especcialy the lymph nodes but also rectal and genital area. The most frequent clinical manifestation of LGV are in its primary stage small painless ulcer or blister in the genital area, in the second stage the infection spreads to the lymphatic system, forming swellings in the lymph nodes of the groin area that often merge, soften, and rupture, forming sinuses and fistulas (hollow passages and ducts) that carry an infectious bloody discharge to the outside of the body, fever, nausea, headaches, pains in their joints, skin rashes, and enlargement of the spleen or liver and in the third stage rectal pain, constipation, a discharge containing pus or bloody mucus, and the narrowing or tightening of the rectum or vagina.