Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «D»:
Dicentric chromosome: An abnormal chromosome with two centromeres rather than the normal one. Every normal chromosome has one centromere that tethers it to the pole of the spindle and is essential to the chromosome at the time of cell division. However, a dicentric chromosome is doubly tethered (by ...
Did not attend (DNA)
Did not attend (DNA): In the UK, DNA is an abbreviation for "did not attend." (In the US, the term used for a patient who missed an appointment is "no-show.")...
DIDMOAD: An acronym that stands for Diabetes
Insipidus (inability to concentrate the urine),
Diabetes Mellitus, Optic Atrophy (degeneration of the nerve to the eye), and Deafness. These features are characteristic of this genetic disease which is also called the Wolfram syndrome. Patients usually ...
Dieldrin: A chlorinated hydrocarbon insecticide. See: Aldrin and dieldrin....
Dieldrix: Trade name of the insecticide dieldrin. See: Aldrin and dieldrin....
Diesel exhaust: The exhaust generated by diesel engines. This exhaust is a complex mixture of combustion products of diesel fuel. The exact composition depends on the type of engine, the speed and load at which it is run, and the composition of the fuel used.
In the year 2000 the US government cla...
Diesel exhaust particle
Diesel exhaust particle: A respirable particle produced during the compression ignition of diesel fuel. Diesel particles are composed of elemental and organic carbon compounds as well as trace amount of other elements with toxic properties including transition metals. See also: Diesel exhaust....
Diet, Atkins: A high-protein, high-fat, low-carbohydrate weight-loss diet popularized by Dr. Robert C. Atkins. See: Atkins diet....
Diet, DASH: See: DASH diet....
Diet, Mediterranean: See: Mediterranean diet....
Diethylstilbestrol: The earliest synthetic (man-made) form of the hormone estrogen.
Diethylstilbestrol (DES) was once widely prescribed to prevent miscarriages and premature births. Its usage was standard practice in the 1950s and 1960s. Millions of women received the drug.
Girls whose mothers wer...
Diff dx: Abbreviation for differential diagnosis, the process of weighing the probability of one disease versus that of other diseases to account for a patient's condition. Dx is the medical abbreviation for diagnosis....
Differential diagnosis: The process of weighing the probability of one disease versus that of other diseases possibly accounting for a patient's illness. The differential diagnosis of rhinitis (a runny nose) includes allergic rhinitis (hayfever), the abuse of nasal decongestants and, of course, the ...
Differential white cell count
Differential white cell count: The proportions of the different types of white cells in the blood, usually split into the different types of granulocytes, lymphocytes, monocytes, eosinophils, and basophils. The differential white cell count was originally done by visual inspection of the blood and i...