Alienist
Alienist: French term for a psychologist, a psychiatrist, or another practitioner who cares for the mentally ill.
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- Alimentary
Alimentary: Concerning food, nourishment, and the organs of digestion. From the Latin alimentum meaning nourishment.
- Alkaloid
Alkaloid: A member of a large group of chemicals that are made by plants and have nitrogen in them. Many alkaloids possess potent pharmacologic effects. The alkaloids include cocaine, nicotine, strychnine, caffeine, morphine, pilocarpine, atropine, methamphetamine, mescaline, ephedrine, and tryptamine.
- Alkaline phosphatase
Alkaline phosphatase: An enzyme that liberates phosphate under alkaline conditions and is made in liver, bone, and other tissues. Alkaline phosphatase can be measured in a routine blood test. Abnormally high serum levels of alkaline phosphatase may indicate bone disease, liver disease, or bile duct obstruction.
- Alkalosis
Alkalosis: Relatively too much base in the blood and body, an abnormal condition resulting from the accumulation of base or the depletion of acid. The pH of an alkalotic body measures above normal. The opposite of alkalosis is acidosis.
- Alkaptonuria
A genetic metabolic disorder due to deficiency of the enzyme homogentisic acid (HGA) dioxygenase. Deficiency of this enzyme leads to the three cardinal features of alkaptonuria (the presence of homogentisic acid in the urine), ochronosis (bluish-black pigmentation in connective tissue), and arthritis. Urine that turns dark is a characteristic feature.