| PC | avoirdupois weight [Lat. pondus civile]; packed cells; paper chromatography; paracortex; parent cell... |
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| BAR | bariatrics; barometer, barometric; beta-adrenergic receptor |
| bar | barometric |
| BRB | bright red blood |
| BRBPR | bright red blood per rectum |
| BL | bright light |
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| PND | Prenatal diagnoses |
| PD | Prenatal diagnosis |
| BAR | Beta-adrenergic receptor |
| BAR | Biofragmentable Anastomosis Ring |
| bright | 1. Radiating or reflecting light; shedding or having much light; shining; luminous; not dark. "The sun was bright o'erhead." (Longfellow) "The earth was dark, but the heavens were bright." (Drake) "The public places were as bright as at noonday." (Macaulay) 2. Transmitting light; clear; transparent. "From the brightest wines He 'd turn abhorrent." (Thomson) 3. Having qualities that render conspicuous or attractive, or that affect the mind as light does the eye; resplendent with charms; as, bright beauty. "Bright as an angel new-dropped from the sky." (Parnell) 4. Having a clear, quick intellect; intelligent. 5. Sparkling with wit; lively; vivacious; shedding cheerfulness and joy around; cheerful; cheery. "Be bright and jovial among your guests." (Shak) 6. Illustrious; glorious. "In the brightest annals of a female reign." (Cotton) 7. Manifest to the mind, as light is to the eyes; clear; evident; plain. "That he may with more ease, with brighter evidence, and with surer success, draw the bearner on." (I. Watts) 8. Of brilliant colour; of lively hue or appearance. "Here the bright crocus and blue violet grew." (Pope) Bright is used in composition in the sense of brilliant, clear, sunny, etc.; as, bright-eyed, bright-haired, bright-hued. Synonym: Shining, splending, luminous, lustrous, brilliant, resplendent, effulgent, refulgent, radiant, sparkling, glittering, lucid, beamy, clear, transparent, illustrious, witty, clear, vivacious, sunny. Origin: OE. Briht, AS. Beorht, briht; akin to OS. Berht, OHG. Beraht, Icel. Bjartr, Goth. Bairhts. Source: Websters Dictionary (01 Mar 1998) |
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| bright field illumination | <microscopy> The method of lighting the specimen with a solid cone of rays. Transmitted bright field illumination is performed by a substage condenser. Reflected bright field illumination is performed by a vertical illuminator. Compare: dark field illumination (05 Aug 1998) |
| bright field imaging | <microscopy> An imaging mode in a transmission electron microscopy that uses only unscattered Electrons to form the image. Contrast in such an image is due entirely to mass-thickness variations in amorphous samples, and may include diffraction contrast in crystalline samples. (05 Aug 1998) |
| bright field microscopy | <technique> Optical microscopy, in which absorption to a great extent and diffraction to a minor extent give rise to the image, as opposed to phase contrast or interference methods of microscopy. (18 Nov 1997) |
| Bright, Richard | <person> English internist and pathologist, 1789-1858. See: Bright's disease. (05 Mar 2000) |
| bright's disease | <medicine> An affection of the kidneys, usually inflammatory in character, and distinguished by the occurrence of albumin and renal casts in the urine. Several varieties of Bright's disease are now recognised, differing in the part of the kidney involved, and in the intensity and course of the morbid process. Origin: From Dr. Bright of London, who first described it. Source: Websters Dictionary (01 Mar 1998) |
| bright t1 lesion | <radiology> (short T1), fat (lipoma, dermoid), sub-acute haemorrhage (metHb), paramagnetic agent (Gd, ? posterior pituitary), proteinaceous fluid (colloid cyst) most abnormalities cause long T1 and T2 (dark/bright) see also: dark T2 lesion (12 Dec 1998) |
| prenatal | <obstetrics> Existing or occurring before birth, with reference to the foetus. Origin: L. Natalis = natal (18 Nov 1997) |
| prenatal care | Care provided the pregnant woman in order to prevent complications, and decrease the incidence of maternal and prenatal mortality. (12 Dec 1998) |
| prenatal diagnosis | Determination of the nature of a pathological condition or disease in the postimplantation embryo, foetus, or pregnant female before birth. (12 Dec 1998) |
| prenatal exposure delayed effects | Delayed effects on offspring of maternal or foetal prenatal exposure to drugs, radiation and other physical agents, manipulation, nutrition, stress, etc. (12 Dec 1998) |
| prenatal life | That interval of life between conception and birth; in humans, usually divided into embryonic and foetal periods. (05 Mar 2000) |
| prenatal screening | Screening for the detection of foetal disease, usually by ultrasound examination or by testing amniotic fluid obtained by amniocentesis. Other screening techniques include testing maternal serum and placental biopsy. (05 Mar 2000) |
| ultrasonography, prenatal | The visualization of tissues during pregnancy through recording of the echoes of ultrasonic waves directed into the body. The procedure may be applied with reference to the mother or the foetus and with reference to organs or the detection of maternal or foetal disease. (12 Dec 1998) |
| arch bar | Any one of several types of wires, bar's, or splints conforming to the arch of the teeth, extending from one side of the arch to the other and located labially, or lingually; used for the treatment of jaw fractures and/or stabilization of injured teeth. (05 Mar 2000) |
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