| SL | sarcolemma; sclerosing leukoencephalopathy; secondary leukemia; segment length; sensation level; sen... |
|---|---|
| HCG, hCG | Human Chorionic Gonadotropin; »ç¶÷À¶¸ð¼º¼º¼±ÀÚ±ØÈ£¸£¸ó 1. Placental Glycoprotein Hormone &nbs... |
| CCL | carcinoma cell line; certified cell line; Charcot-Leyden crystal; continuing care level; critical ca... |
| CL | capillary lumen; cardiolipin; cell line; centralis lateralis; chemiluminescence; chest and left arm ... |
| SAL | sensorineural activity level; sterility assurance level; suction-assisted lipectomy |
| SGP | Strain gauge plethysmography |
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| AL | Attachment level |
| BiPAP | Bi-level positive airway pressure |
| BMLD | binaural masking level difference |
| BAL | Blood Alcohol Level |
| bite gauge | <instrument> A device for measuring biting pressure. Synonym: bite gauge, occlusometer. Origin: Gnatho-+ dynamometer (05 Mar 2000) |
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| Boley gauge | A caliper-type gauge graduated in millimeters used to measure the thickness of various dental materials. (05 Mar 2000) |
| gauge | 1. A measure; a standard of measure; an instrument to determine dimensions, distance, or capacity; a standard. "This plate must be a gauge to file your worm and groove to equal breadth by." (Moxon) "There is not in our hands any fixed gauge of minds." (I. Taylor) 2. Measure; dimensions; estimate. "The gauge and dimensions of misery, depression, and contempt." (Burke) 3. <machinery> Any instrument for ascertaining or regulating the dimensions or forms of things; a templet or template; as, a button maker's gauge. To measure the dimensions of, or to test the accuracy of the form of, as of a part of a gunlock. "The vanes nicely gauged on each side." (Derham) 4. <physics> Any instrument or apparatus for measuring the state of a phenomenon, or for ascertaining its numerical elements at any moment; usually applied to some particular instrument; as, a rain gauge; a steam gauge. 5. Relative positions of two or more vessels with reference to the wind; as, a vessel has the weather gauge of another when on the windward side of it, and the lee gauge when on the lee side of it. The depth to which a vessel sinks in the water. 6. The distance between the rails of a railway. The standard gauge of railroads in most countries is four feet, eight and one half inches. Wide, or broad, gauge, in the United States, is six feet; in England, seven feet, and generally any gauge exceeding standard gauge. Any gauge less than standard gauge is now called narrow gauge. It varies from two feet to three feet six inches. 7. The quantity of plaster of Paris used with common plaster to accelerate its setting. 8. To measure the capacity, character, or ability of; to estimate; to judge of. "You shall not gauge me By what we do to-night." (Shak) 9. That part of a shingle, slate, or tile, which is exposed to the weather, when laid; also, one course of such shingles, slates, or tiles. Gauge of a carriage, car, etc, the distance between the wheels; ordinarily called the track. Gauge cock, a stop cock used as a try cock for ascertaining the height of the water level in a steam boiler. Gauge concussion, an instrument for measuring the diameter of the bore of a cannon at any point of its length. Steam gauge, an instrument for measuring the pressure of steam, as in a boiler. Tide gauge, an instrument for determining the height of the tides. Vacuum gauge, a species of barometer for determining the relative elasticities of the vapor in the condenser of a steam engine and the air. Water gauge. A contrivance for indicating the height of a water surface, as in a steam boiler; as by a gauge cock or glass. The height of the water in the boiler. Wind gauge, an instrument for measuring the force of the wind on any given surface; an anemometer. Wire gauge, a gauge for determining the diameter of wire or the thickness of sheet metal; also, a standard of size. Origin: Written also gage. (20 Mar 1998) |
| gauge pressure | Pressure measured relative to ambient atmospheric pressure; at sea level, it is 1 atm less than the pressure in the atmosphere. Compare: absolute pressure. (05 Mar 2000) |
| catheter gauge | A metal plate with holes of graduated diameter used to determine the size of a catheter. (05 Mar 2000) |
| strain gauge | A device, employing the Wheatstone bridge principle, used for accurate measurement of forces such as strain, stress, or pressure. (05 Mar 2000) |
| undercut gauge | A device, used with a surveyor, to precisely locate areas for the placement of the retentive components of clasps when designing removable partial dentures. (05 Mar 2000) |
| ACE level | <investigation> This is a blood test which measures the concentration of angiotensin-converting enzyme (ACE) in the bloodstream. Elevations in angiotensin-converting enzyme are seen sarcoidosis, histoplasmosis, alcoholic cirrhosis, asbestosis, berylliosis, diabetes, Hodgkin's disease, hyperthyroidism, amyloidosis, primary biliary cirrhosis, idiopathic pulmonary fibrosis, pulmonary embolism, scleroderma, silicosis, tuberculosis, Gaucher's disease and leprosy. The normal values are 18 to 67 U/ml over 20 years of age (people under 20 have higher levels). (15 Jan 1998) |
| acoustic reference level | The biological reference level for sound measurements. When the term decibel is used to indicate the noise level, a reference quantity is implied; this reference value is usually expressed as a sound pressure of 20 micronewtons per square meter. The reference level is referred to as 0 decibels, the baseline of the scale of noise level's; this baseline is considered the weakest sound that can be heard by a person with very good hearing in an extremely quiet location. Other equivalent reference level's still being used include 0.0002 microbar and 0.0002 dyne per square centimeter. (05 Mar 2000) |
| background level | The average amount of a substance present in the environment. Originally referring to naturally occurring phenomena. Used in toxic substance monitoring. (05 Dec 1998) |
| blood porphyrin level | A test which is used to measure red blood cell porphyrin levels. Porphyrins are pigments found in both animal and plant life. This test is useful in evaluating any number of porphyrin disorders (involving the various porphyrins) of red blood cells. Increased levels of coproporphyrins can indicate congenital erythropoietic porphyria or sideroblastic anaemia. Increased protoporphyrins may be seen in infection, thalassaemia, sideroblastic anaemia, iron deficient anaemia, increased erythropoiesis and lead poisoning. Increased uroporphyrins may indicate congenital erythropoietic porphyria or erythropoietic protoporphyria. (27 Sep 1997) |
| carbon dioxide blood level | A measure of the bicarbonate level in the blood based on a venipuncture specimen. The serum carbon dioxide is one of the normally reported values in the electrolytes profile. Lower levels of carbon dioxide indicate an acidosis. The normal level is 20 to 29 mEq/L. Lower than normal levels can indicate diabetic ketoacidosis, lactic acidosis, alcoholic ketoacidosis, kidney disease, renal failure, diarrhoea, Addison's disease, ethylene glycol poisoning or methanol poisoning. Greater than normal levels can be seen with excessive vomiting, hyperaldosteronism and Cushing's syndrome. (27 Sep 1997) |
| vasopressin level | This test measures the amount of ADH in the serum. It is used to detect disorders that may affect the level of ADH in the serum. Normal values are: 0 to 4.7 pg/ml. Elevated ADH levels can indicate a CNS infection, fluid imbalance, CNS tumour, SIADH or acute porphyria. Low levels can indicate: diabetes insipidus or damage to the pituitary gland. (27 Sep 1997) |
| maximum permissible exposure level | The highest level of exposure to a substance, usually noxious, in the environment or during diagnostic and therapeutic procedures, that a body can tolerate without injury. (12 Dec 1998) |
| mean sea level | <marine biology> A tidal datum: the arithmetic mean of hourly water elevations observed over a specific 19-year cycle. Points on land can be referenced to a mean sea level, in which case the datum assumes zero elevation. (09 Oct 1997) |
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