Drugs Information Online
Drugs and diseases reference index

Drugs and diseases reference index
Search
EN

Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «M»:

  1. Maternal Maternal
    Maternal: 1. Pertaining to the mother as, for example, the maternal mortality rate. 2. Related through the mother as, for example, the maternal grandparents. 3. Inherited from the mother as, for example, the maternal X chromosome....
  2. Maternal age Maternal age
    Maternal age: The age of the mother at the time of delivery. Advanced maternal age is usually defined as age 35 or more at delivery. Advanced maternal age predisposes to Down syndrome (trisomy 21). The risk of having a Down syndrome baby rises with maternal age. It essentially doubles from 1 in 725...
  3. Maternal mortality rate Maternal mortality rate
    Maternal mortality rate: The number of maternal deaths related to childbearing divided by the number of live births (or by the number of live births + fetal deaths) in that year. The maternal mortality rate in the United States in 1993 (and 1994) was 0.1 per 1,000 live births, or 1 mother dying per ...
  4. Maternal myasthenia gravis Maternal myasthenia gravis
    Maternal myasthenia gravis: The presence of myasthenia gravis in a pregnant woman. Myasthenia gravis is an autoimmune neuromuscular disorder characterized by fatigue and exhaustion of muscles. It is caused by a mistaken immune response to the nicotinic acetylcholine receptors (AChR), which are fou...
  5. Maternal phenylketonuria Maternal phenylketonuria
    Maternal phenylketonuria: A mother with the genetic disease phenylketonuria (PKU) whose high blood levels of phenylalanine (phe) are dangerous to a developing fetus. High phe is a teratogen. It can damage a baby before birth. Women with PKU who are off the special PKU diet should restart back it,...
  6. Maternal serum alpha-fetoprotein (MSAFP) Maternal serum alpha-fetoprotein (MSAFP)
    Maternal serum alpha-fetoprotein (MSAFP): The presence of AFP, a plasma protein normally produced by the fetus, in the mother's blood. MSAFP serves as the basis for some valuable tests. AFP is manufactured principally in the fetus's liver and, also, in the fetal gastrointestinal (GI) tract and ...
  7. Materteral Materteral
    Materteral: 1. Literally, relating to a maternal aunt. 2. Figuratively, suggestive of an aunt on either side of the family. 3 In medical genetics, pertaining to an aunt. An materteral relationship is the genetic relationship between aunts and their nieces and nephews. Materteral is synonymous wit...
  8. Materterine Materterine
    Materterine: See: Materteral....
  9. Mathematics disorder Mathematics disorder
    Mathematics disorder: A condition characterized by math skills that are significantly below normal, given the person's age, intelligence, and education. A mathematics disorder can include problems writing or printing numbers, counting, adding and subtracting, interpreting simple mathematical sig...
  10. Matricectomy Matricectomy
    Matricectomy: the process of surgically, chemically, or electrically destroying all or part of the base nail portion called the nail matrix. Complete destruction of the nail matrix results in permanent loss of that portion of the nail. Once the nail matrix is fully removed or destroyed, a new nail p...
  11. Matter, gray Matter, gray
    Matter, gray: The cortex of the brain which contains nerve cell bodies. The gray matter is as opposed to the white matter, the part of the brain that contains myelinated nerve fibers. The gray matter is so named because it in fact appears gray. In "The Mysterious Affair at Styles" (1920), ...
  12. Matter, white Matter, white
    Matter, white: The part of the brain that contains myelinated nerve fibers. The white matter is white because it is the color of myelin, the insulation covering the nerve fibers. The white matter is as opposed to the gray matter (the cortex of the brain which contains nerve cell bodies)....
  13. Maturity onset diabetes of the young Maturity onset diabetes of the young
    Maturity onset diabetes of the young: Diabetes mellitus that has early onset (usually before the age of 25), is non-insulin-dependent, and is inherited in an autosomal dominant manner. Abbreviated MODY. MODY is often considered a subtype of type 2 diabetes but it is unlike the usual type 2 diabetes...
  14. Maxilla Maxilla
    Maxilla: The maxilla is the major bone of the upper jaw ...
  15. Mb Mb
    Mb: Megabase....