English dictionary of medical terms (50)
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- No:980 - leukaemia
an acute or chronic disease of unknown cause in man and other warm-blooded animals that
involves the blood-forming organs, is
characterized by an abnormal increase in the number of leucocytes
in the tissues of the body with or without a corresponding increase
of those in the circulating blood, and is classified according of
the type leucocyte most prominently involved.
- No:981 - leukocytic or leucocytic
pertaining to leucocytes.
- No:982 - leukocytosis or leucocytosis
a transient increase in the number of leucocytes in the blood,
resulting from various causes, as haemorrhage, fever, infection,
- No:983 - leukopenia or leucopenia
(leucocyte + Gr. penia poverty) reduction in the number of
leucocytes in the blood, the count being 5000 per cu. mm. or less.
- No:984 - leukoplakia or leucoplakia
(leuko- + Gr. plax plate + -ia) 1. a white patch on a mucous
membrane that will not rub off. 2. oral.
- No:985 - leukorrhea or leucorrhea
(leuko- + Gr. rhoia flow) a whitish, viscid discharge from the
vagina and uterine cavity.
- No:986 - libido
- No:987 - lichenification
hypertrophy of the epidermis, resulting in thickening of the skin
with exaggeration of the normal skin markings, giving the skin a
leathery barklike appearance, which is caused by prolonged rubbing
or scratching. It may arise on seemingly normal skin, or it may
develop at the site of another pruritic cutaneous disorder.
- No:988 - ligament
a band of fibrous tissue that connects bones or cartilages, serving
to support and strengthen joints.
- No:989 - limbic
pertaining to a limbus, or margin; forming a border around.
- No:990 - linear
(L. linearis) pertaining to or resembling a line.
- No:991 - lipid
any of a heterogeneous group of flats and fatlike substances
characterized by being water-insoluble and being extractable by
nonpolar (or fat) solvents such as alcohol, ether, chloroform,
benzene, etc. All contain as a major constituent aliphatic
hydrocarbons. The lipids, which are easily stored in the body,
serve as a source of fuel, are an important constituent of cell
structure, and serve other biological functions. Lipids may be
considered to include fatty acids, neutral fats, waxes, and
steroids. Compound lipids comprise the glycolipids, lipoproteins,
- No:992 - lipodystrophy
(lipo- + dystrophy) 1. any disturbance of fat metabolism. 2. a
group of conditions due to defective metabolism of fat, resulting
in the absence of subcutaneous fat, which may be congenital or
acquired and partial or total. Called also lipoatrophy and
- No:993 - lipophilic
having an affinity for fat; pertaining to or characterized by
- No:994 - lipoprotein
any of the lipid-protein complexes in which lipids are transported
in the blood; lipoprotein particles consist of a spherical
hydrophobic core of triglycerides or cholesterol esters surrounded
by an amphipathic monolayer of phospholipids, cholesterol, and
apolipoproteins; the four principal classes are high-density, low-density, and very-low-density
lipoproteins and chylomicrons.
- No:995 - liposome
(lipo- + Gr. soma body) a spherical particle in an aqueous medium,
formed by a lipid bilayer enclosing an aqueous compartment.
- No:996 - liquifilm
a thin liquid layer of coating.
- No:997 - liquor
1. a liquid, especially an aqueous solution containing a medicinal
substance. 2. a general term used in anatomical nomenclature for
certain fluids of the body. See also solution.
- No:998 - livedo
a discoloured spot or patch on the skin, commonly due to passive
congestion; commonly used alone to refer to l. reticularis.
- No:999 - loading dose
a quantity higher than the average or maintenance dose, used at the
initiation of therapy to rapidly establish a desired level of the
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