small for gestational age |
<obstetrics, paediatrics> A weight classification of newborns associated with poor health outcomes, the weight falling below the 10th percentile on the intrauterine growth curve for the infant's calculated gestational age.
(27 Sep 1997) |
infant, small for gestational age |
An infant having a birth weight lower than expected for its gestational age.
(12 Dec 1998) |
gestational diabetes |
A glucose intolerance which occurs in pregnancy, usually noticed between the 24th and 28th weeks of pregnancy. In most cases the blood glucose level returns to normal after delivery. Although the symptoms of this form of diabetes are mild and nonserious for the mother, elevated blood glucose in the mother has been associated with an increased risk of foetal and newborn death. Risk factors for gestational diabetes include maternal age over 25, family history of diabetes, obesity, birth weight over 9 lb in a previous delivery or a history for congenital birth defect or death, in a previous newborn.
(27 Sep 1997) |
gestational oedema |
Occurrence of a generalised and excessive accumulation of fluid in the tissues of greater than 1+ pitting after 12 hours' bed rest, or of a weight gain of 5 pounds or more in 1 week due to the influence of pregnancy.
(05 Mar 2000) |
gestational proteinuria |
The presence of proteinuria during or under the influence of pregnancy in the absence of hypertension, oedema, renal infection, or known intrinsic renovascular disease.
(05 Mar 2000) |
gestational psychosis |
An obsolete term for psychotic reaction with morbid depressive features associated with pregnancy.
See: postpartum psychosis, puerperal psychosis.
(05 Mar 2000) |
gestational sac |
<radiology> Arises from blastocyst which implants into secretory endometrium surrounded by echogenic trophoblast sac size: 6th week = 17mm;, 8th week = 31 mm, fills chorionic cavity by 12th week visualization of gestational sac, relative to beta-hCG levels: transabdominal scan: greater than 1800 IU/l, transvaginal scan: less than 500 IU/l = 20%, 500-1000 IU/l = 80%, greater than 1000 IU/l = 100%, relative to menstrual age, transabdominal scan: earliest by 5.5 weeks (10-12mm), transvaginal scan: routinely seen by 5-5.5 weeks see: double decidual sac
(12 Dec 1998) |
gestational trophoblastic disease |
(choriocarcinoma, molar pregnancy) a type of cancer associated with pregnancy in which a grape-like mole develops in the womb instead of a foetus.
(16 Dec 1997) |
diabetes, gestational |
A diabetic condition that appears during pregnancy (gestation) and may go away after the birth of the baby.
(12 Dec 1998) |
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) |