Category: D
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Delphi method
The polling of experts in a field to reach consensus, make decisions, or disseminate knowledge. Individual specialists are organized in a virtual group, i.e., one that does not meet face-to-face in one place. They are each given a standard set of questions to answer or review. Their responses are tallied by the group’s organizers, and…
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Delomorphous
Having a well-defined, unchanging structure or shape.
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Dellen
Thinning in the periphery of the cornea that results from locally inadequate lubrication of the corneal surface.
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Deliver
To aid in childbirth.
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Delirium of persecution
Delirium in which the patient feels persecuted by surrounding people.
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Delirium of negation
Delirium in which the patient thinks body parts are missing.
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Delirifacient
An agent that alters mental status, causing agitated confusion (e.g., atropine or other anticholinergic drugs).
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Deliquescence
The process of becoming liquefied or moist by absorbing of water from the air. Ordinary table salt has this property.
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Delayed transfusion reaction
The immune mediated destruction of donated blood cells, occurring about 3 to 5 days after a transfusion and often resulting from recipient antibodies against minor antigens on donor red cells. Delayed transfusion reactions are relatively uncommon except in patients who have received many previous transfusions and have become alloimmunized (e.g., patients with sickle cell anemia).…
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Delayed reaction
A reaction occurring a considerable time after a stimulus, especially a reaction such as a skin inflammation occurring hours or days after exposure to the allergen. An allergic response that arises hours or even days after exposure to an allergen. This reaction can be confined to the contact area or widespread, affecting the entire body.…