| ICC | immunocompetent cells; immunocytochemistry; Indian childhood cirrhosis; intensive coronary care; int... |
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| ONC | oncogene; oncology; Orthopaedic Nursing Certificate; over-the-needle catheter |
| OSS | over-the-shoulder strap |
| OTC | ornithine transcarbamylase; oval target cell; over-the-counter; oxytetracycline |
| POSS | proximal over-shoulder strap |
acute angle
| maternal mRNA | <molecular biology> Messenger RNA found in oocytes and early embryos that is derived from the maternal genome during oogenesis. See: masked messenger RNA. (18 Nov 1997) |
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| maternal placenta | <anatomy> The part of the placenta derived from the uterine tissue. See: placenta. Synonym: maternal placenta, placenta uterina. (05 Mar 2000) |
| maternal serum alpha-fetoprotein | A plasma protein, alpha-fetoprotein (afp) is normally produced by the foetus. The level of afp in the blood serum of pregnant women provides a screening test for open neural tube defects (anencephaly and spina bifida) and for down syndrome (and other chromosome abnormalities). The maternal serum afp (msafp) tends to be unusally high with open neural tube defects and unsually low with down syndrome. (12 Dec 1998) |
| maternal welfare | Organised efforts by communities or organizations to improve the health and well-being of the mother. (12 Dec 1998) |
| phenylketonuria, maternal | Phenylketonuria in a pregnant woman. The maternal disease puts the foetus at great risk of mental retardation and other congenital diseases. (12 Dec 1998) |
| mortality rate, maternal | The number of maternal deaths related to childbearing divided by the number of live births (or by the number of live births + foetal 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 10,000 live births. (12 Dec 1998) |
| direct maternal death | Death resulting from obstetric complications of the gestation, labour, or puerperium, and from interventions, omissions, incorrect treatment, or a chain of events caused by any of the above, indirect maternal death, an obstetric death resulting from previously existing disease or from disease developing during pregnancy, labour, or the puerperium; it is not directly due to obstetric causes, but to conditions aggravated by the physiological effects of pregnancy. (05 Mar 2000) |
| achievement age | The relationship between the chronologic age and the age of achievement, as established by standard achievement tests. (05 Mar 2000) |
| age | 1. The whole duration of a being, whether animal, vegetable, or other kind; lifetime. "Mine age is as nothing before thee." (Ps. Xxxix. 5) 2. That part of the duration of a being or a thing which is between its beginning and any given time; as, what is the present age of a man, or of the earth? 3. The latter part of life; an advanced period of life; seniority; state of being old. "Nor wrong mine age with this indignity." (Shak) 4. One of the stages of life; as, the age of infancy, of youth, etc. 5. Mature age; especially, the time of life at which one attains full personal rights and capacities; as, to come of age; he (or she) is of age. In the United States, both males and females are of age when twenty-one years old. 6. The time of life at which some particular power or capacity is understood to become vested; as, the age of consent; the age of discretion. 7. A particular period of time in history, as distinguished from others; as, the golden age, the age of Pericles. "The spirit of the age." "Truth, in some age or other, will find her witness." (Milton) Archeological ages are designated as three: The Stone age (the early and the later stone age, called paleolithic and neolithic), the Bronze age, and the Iron age. During the Age of Stone man is supposed to have employed stone for weapons and implements. See Augustan, Brazen, Golden, Heroic, Middle. 8. A great period in the history of the Earth. The geologic ages are as follows: 1. The Archaean, including the time when was no life and the time of the earliest and simplest forms of life. 2. The age of Invertebrates, or the Silurian, when the life on the globe consisted distinctively of invertebrates. 3. The age of Fishes, or the Devonian, when fishes were the dominant race. 4. The age of Coal Plants, or Acrogens, or the Carboniferous age. 5. The Mesozoic or Secondary age, or age of Reptiles, when reptiles prevailed in great numbers and of vast size. 6. The Tertiary age, or age of Mammals, when the mammalia, or quadrupeds, abounded, and were the dominant race. 7. The Quaternary age, or age of Man, or the modern era. 9. A century; the period of one hundred years. "Fleury . . . Apologizes for these five ages." (Hallam) 10. The people who live at a particular period; hence, a generation. "Ages yet unborn." "The way which the age follows." (J. H. Newman) "Lo! where the stage, the poor, degraded stage, Holds its warped mirror to a gaping age." (C. Sprague) 11. A long time. "He made minutes an age." Age of a tide, the time from the origin of a tide in the South Pacific Ocean to its arrival at a given place. Moon's age, the time that has elapsed since the last preceding conjunction of the sun and moon. Age is used to form the first part of many compounds; as, agelasting, age-adorning, age-worn, age-enfeebled, agelong. Synonym: Time, period, generation, date, era, epoch. Origin: OF. Aage, eage, F. Age, fr. L. Aetas through a supposed LL. Aetaticum. L. Aetas is contracted fr. Aevitas, fr. Aevum lifetime, age; akin to E. Aye ever. Cf. Each. Source: Websters Dictionary (01 Mar 1998) |
| age-class | <ecology> A group of individuals of a species that have the same age. (09 Oct 1997) |
| age distribution | The frequency of different ages or age groups in a given population. The distribution may refer to either how many or what proportion of the group. The population is usually patients with a specific disease but the concept is not restricted to humans and is not restricted to medicine. (12 Dec 1998) |
| age factors | Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from aging, a physiological process, and time factors which refers only to the passage of time. (12 Dec 1998) |
| age groups | Persons classified by age from birth (infant, newborn) to octagenarians and older (aged, 80 and over). (12 Dec 1998) |
| age of onset | The age or period of life at which a disease or the initial symptoms or manifestations of a disease appear in an individual. (12 Dec 1998) |
| age-related macular degeneration | A common macular degeneration beginning with drusen of the macula and pigment disruption and sometimes leading to severe loss of central vision. (05 Mar 2000) |