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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «L»:

  1. Lower GI series Lower GI series
    Lower GI series: Short for lower gastrointestinal series. A series of x-rays of the rectum, colon and lower section of the small intestine taken after the patient has a barium enema. Barium is a white, chalky substance that coats the organs so they will show up on the x-ray. Also called a barium ene...
  2. Lower leg Lower leg
    Lower leg: The lower leg is the bottom segment of the leg: the part below the knee. The lower leg contains two long bones. The larger of these two bones is the tibia, the smaller one the fibula. The tibia is familiarly known as the shinbone. "Tibia" is a Latin word meaning both shinbone and flu...
  3. Lower motor neuron Lower motor neuron
    Lower motor neuron: A nerve cell that goes from the spinal cord to a muscle. The cell body of a lower motor neuron is in the spinal cord and its termination is in a skeletal muscle. The loss of lower motor neurons leads to weakness, twitching of muscle (fasciculation), and loss of muscle mass (muscl...
  4. Lower segment Cesarian section (LSCS) Lower segment Cesarian section (LSCS)
    Lower segment Cesarian section (LSCS): A Cesarian section in which the surgical incision (cut) is made in the lower segment of the uterus....
  5. LP (lumbar puncture) LP (lumbar puncture)
    LP (lumbar puncture): Also known as a spinal tap, an LP is a procedure whereby spinal fluid is removed from the spinal canal for the purpose of diagnostic testing. It is particularly helpful in the diagnosis of inflammatory diseases of the central nervous system, especially infections, such as m...
  6. LPA LPA
    LPA: Little People of America. The abbreviation also for the left pulmonary artery....
  7. LQTS LQTS
    LQTS: The long QT syndrome. See Long QT syndrome....
  8. LSCS LSCS
    LSCS: Lower segment Cesarian section. A Cesarian section in which the surgical incision (cut) is made in the lower segment of the uterus....
  9. LSD LSD
    LSD: Lysergic acid diethylamide, an hallucinogen. LSD is an abbreviation of the German term Lysergsaure-Diathylamid for lysergic acid diethylamide. LSD is considered the typical hallucinogen and the characteristics of its action and effects apply to the other hallucinogens, including mescaline, psi...
  10. Lubricant Lubricant
    Lubricant: An oily or slippery substance. A vaginal lubricant may be helpful for women who feel pain during intercourse because of vaginal dryness....
  11. Lues Lues
    Lues: Pronounced lou-ease. An old name for syphilis, a sexually transmitted disease (STD) that has been around for centuries and is caused by Treponema pallidum, a microscopic organism called a spirochete, a worm-like spiral-shaped organism that infects by burrowing into the moist mucous membrane...
  12. Luetic Luetic
    Luetic: 1. Relating to syphilis, caused by it, or suffering from it. 2. A person with syphilis. From lues, an old name for syphilis....
  13. LUL LUL
    LUL: Acronym for the left upper lobe (of the lung). The left lung has but two lobes. The other lobe is naturally the left lower lobe (LLL). The right lung has three lobes: the right lower lobe (RLL), the right middle lobe (RML), and the right upper lobe (RUL). The reason why the right lung has thre...
  14. Lumbar Lumbar
    Lumbar: Referring to the 5 lumbar vertebrae which are situated below the thoracic vertebrae and above the sacral vertebrae in the spinal column. The 5 lumbar vertebrae are represented by the symbols L1 through L5. There are correspondingly 5 lumbar nerves. ...
  15. Lumbar puncture Lumbar puncture
    Lumbar puncture: A lumbar puncture or "LP" is a procedure whereby spinal fluid is removed from the spinal canal for the purpose of diagnostic testing. It is particularly helpful in the diagnosis of inflammatory diseases of the central nervous system, especially infections, such as meni...