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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «L»:

  1. Lipoprotein Lipoprotein
    Lipoprotein: A complex of lipid and protein, the way lipids travel in the blood. Cholesterol, a building block of the outer layer of cells (cell membranes), is transported through the blood in the form of water- soluble carrier molecules known as lipoproteins. The lipoprotein particle is compo...
  2. Lipoproteins Lipoproteins
    Lipoproteins: Complexes of lipid and protein, the way lipids travel in the blood. Cholesterol, a building block of the outer layer of cells (cell membranes), is transported through the blood in the form of water-soluble carrier molecules known as lipoproteins. The lipoprotein particle is composed...
  3. Liposarcoma Liposarcoma
    Liposarcoma: A malignant tumor that arises in fat cells in deep soft tissue, such as that inside the thigh. Most frequent in middle-aged and older adults (age 40 and above), liposarcomas are the most common of all soft-tissue sarcomas....
  4. Liposuction Liposuction
    Liposuction: The most common cosmetic operation in the U. S. with over 400,000 such surgical operations done annually, liposuction involves the surgical suctioning of fat deposits from specific parts of the body, the most common being the abdomen (the "tummy"), buttocks ("behind"), hips, thighs ...
  5. Liposuction, tumescent Liposuction, tumescent
    Liposuction, tumescent: The surgical suctioning of fat deposits from specific parts of the body, the most common being the abdomen (the "tummy"), buttocks ("behind"), hips, thighs and knees, chin, upper arms, back, and calves after pumping several quarts/liters of a salt water solution underneath th...
  6. Liposuction, ultrasonic-assisted Liposuction, ultrasonic-assisted
    Liposuction, ultrasonic-assisted: Liposuction involves the surgical suctioning of fat deposits from specific parts of the body, the most common being the abdomen (the "tummy"), buttocks ("behind"), hips, thighs and knees, chin, upper arms, back, and calves. Liposuction breaks up and "sucks" fat out...
  7. Lips Lips
    Lips: Aside from the lips of the mouth, there are two pairs of lips at the entrance to the vagina. They are the labia majora (the larger outside pair) and the labia minora (the smaller inside pair). Together they form part of the vulva (the female external genitalia)....
  8. Liquid diet Liquid diet
    Liquid diet: The Liquid diet is the restriction of solid food intake, and replacement of solid food with liquids. In hospitals, liquid diets are prescribed by doctors for a number of reasons for patients who are unable to consume solid foods. Liquid diets may be prescribed following surgery or as a ...
  9. Liquid nitrogen Liquid nitrogen
    Liquid nitrogen: Nitrogen in a liquid state. Liquid nitrogen is supercool -- about 200 degrees Celsius (320 degrees Fahrenheit) below zero -- and is used for cryopreservation, cryosurgery, and cryomedicine. Liquid nitrogen is invaluable for preserving blood and bone marrow cells, sperm, ova, early e...
  10. Liquor cerebrospinalis Liquor cerebrospinalis
    Liquor cerebrospinalis: See: Cerebrospinal fluid....
  11. Lissencephaly Lissencephaly
    Lissencephaly: A brain malformation characterized by microcephaly and the lack of normal convolutions (folds) in the brain. Lissencephaly literally means "smooth brain." It is caused by defective neuronal migration, a defect in the process in which nerve cells move from their place of origin to the...
  12. Lissencephaly syndrome Lissencephaly syndrome
    Lissencephaly syndrome: See: Miller-Dieker syndrome....
  13. Listeria Listeria
    Listeria: A group of bacteria capable of causing illness including potentially fatal infections in the elderly, newborns, pregnant women, and persons with a weakened immune system. Listeria monocytogenes is the form of Listeria most commonly responsible for infections. Symptoms of listeriosis inclu...
  14. Listeriosis Listeriosis
    Listeriosis: An illness that arises from infection caused by eating food contaminated with the bacterium Listeria monocytogenes. The disease affects primarily pregnant women, newborns, the elderly, and anyone with immune compromise. Symptoms include fever, muscle aches, nausea and diarrhea. If inf...
  15. Liter Liter
    Liter: A metric measure of capacity that, by definition, is equal to the volume of a kilogram of water at 4 degrees centigrade and at standard atmospheric pressure of 760 millimeters of mercury. Metric equivalents -- There are 1000 cubic centimeters or 1 cubic decimeter in 1 liter. U.S. equ...