Category: A
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Autogenous
Originating or derived from within the same subject; not derived from an external source; self‐produced, autologous, endogenous. Produced either in the person’s body, or using tissue from the person’s own body. A term applied to products which arise within the body. It is applied to bacterial vaccines manufactured from the organisms found in discharges from…
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Autocrine
Transfer of chemical compounds as hormones and growth factors within the cell.
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Auscultation
The process of determining the condition of various parts of the body by listening to the sounds they emit. Listening to sounds produced by the internal organs or other body parts for diagnostic purposes. A diagnostic technique of listening for sounds within the body, particularly the lungs, heart, or abdominal viscera. The act of listening…
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Auriculotemporal syndrome
A congenital or acquired condition (especially after surgery on the parotid gland) characterized by sweating and flushing in the periauricular and temporal areas when certain foods are eaten. Also known as Frey’s syndrome, Baillarger’s syndrome, or Dupny’s syndrome.
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Auricular prosthesis
Fixed/removable artificial replacement for all or part of a human ear.
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Augmentation
The act of enlarging or increasing, as in size, extent, or quantity, beyond the existing size. augmentation. Grafting procedure designed to increase the volume of existing tissues, usually referring to bone for the purpose of adequate bony support around implants and/or improving tissue contours for esthetic purposes; also in alveolar ridge augmentation, bone grafts or…
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Augment
To make greater, more numerous, larger, or more intense.
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Atypical facial pain
A painful syndrome characterized by dull aching or throbbing, rather than paroxysms of pain, such as seen in trigeminal, glossopharyngeal, or postherpetic neuralgia, occurring in areas supplied by various nerve groups, including the fifth and ninth cranial nerves and the second and third cervical nerves. The distribution of atypical facial pain does not follow the…
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Atypia
Not conforming to type; irregular. Deviation from a standard or regular type.
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Attrition
The action of weakening and/or wearing down by rubbing or friction. The mechanical deterioration and erosion of the occlusal surfaces of the teeth as a consequence of chewing or parafunction. Tooth wear caused by grinding. The condition of being worn away, as may be caused by friction. The wearing away of teeth surfaces by normal…