| BCP | basic calcium phosphate; birth control pill; blue cone pigment; Blue Cross Plan; bromcresol purple |
|---|---|
| CHRPE | congenital hypertrophy of the retinal pigment epithelium |
| PDSG | pigment dispersion syndrome glaucoma |
| PEDF | pigment epithelium-derived factor |
| PG | paregoric; parotid gland; pentagastrin; pepsinogen; peptidoglycan; Pharmacopoeia Germanica; phosphat... |
| pigment epithelium of optic retina | pigmented part of retina |
|---|---|
| pigment induration of the lung | A condition characterised by firmness of the lungs, and a brown colour associated with haemosiderin-pigmented macrophages in alveoli, consequent upon long-continued congestion due to heart disease. Synonym: pigment induration of the lung. (05 Mar 2000) |
| wear-and-tear pigment | Lipofuscin that accumulates in aging or atrophic cells as a residue of lysosomal digestion. (05 Mar 2000) |
| haematogenous pigment | A pigment derived from the haemoglobin of the red blood cells. (05 Mar 2000) |
| hepatogenous pigment | Bile pigment derived from the destruction of haemoglobin in the liver. (05 Mar 2000) |
| natural pigment | A naturally occurring coloured compound; absorbs light in the visible range of the electromagnetic spectrum. Compare: structural colour. Synonym: biochrome. (05 Mar 2000) |
| incontinence of pigment | Loss of melanin from the epidermis, and accumulation in melanophages in the upper dermis; seen in several inflammatory diseases of the skin and in incontinentia pigmenti. (05 Mar 2000) |
| formalin pigment | <chemistry> A pigment formed when acid aqueous solutions of formaldehyde act on blood-rich tissues; characterised by rotation of the plane of polarised light, withstanding extraction in aqueous and lipid solvents, being bleached in acids and hydrogen peroxide; not formed when tissue is fixed with formaldehyde buffered to pH levels above 6. (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) |