Category: P
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Proptosis
Forward displacement of the eyeball. A condition in which the eye protrudes from the orbit. Some causes include thyroid disorders, tumours within the orbit, inflammation or infection of the orbit. Proptosis due to endocrine abnormality (e.g. thyroid problems) is known as exophthalmos. An abnormal protrusion forward of the eyeball, seen in thyroid eye disease and…
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Proportion
A quantity of something, especially as compared to the whole. A specific type of ratio in which the numerator is a part of the denominator. Proportions are always between and 1 (inclusive). They are often expressed as rates such as percentages. The comparative relation of one thing to another; the harmonious relationship among parts or…
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Properdin
Protein in blood plasma which can destroy Gram-negative bacteria and neutralise viruses when acting together with magnesium. Non-specific antibody component of blood serum, active against many bacteria, viruses and yeasts. Properdin is thermolabile, and contained in euglobulin. A group of substances in blood plasma that, in combination with complement and magnesium ions, is capable of…
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Propagate
To multiply something, or cause something to multiply. To intentionally multiply a particular plant, whether by sowing seed, taking cuttings, grafting, budding, division, or using tissue culture techniques in a laboratory.
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Pronounced
Very obvious or marked.
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Pronator
A muscle which makes the hand turn face downwards. Any muscle that causes pronation of the forearm and hand; for example, the pronator teres, a two-headed muscle arising from the humerus and ulna, close to the elbow, and inserted into the radius. Muscles that turn the hand inward so that the palm faces downward. A…
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Promontory
A section of an organ, especially the middle ear and sacrum which stands out above the rest. A projecting part of an organ or other structure.
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Prominence
A part of the body which sticks out or stands out. A projection, such as a projection on a bone.
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Promethazine
An antihistamine drug used in the treatment of allergies and motion sickness. Antihistamine used to treat allergies and to induce sedation; it is also an antiemetic, effective in treating nausea, especially that of motion sickness. Adverse effects include drowsiness and dry mouth. A drug used to treat motion sickness, nausea, and allergies. Promethazine (Mepergan, Phenergan)…
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Prolonged
Very long.