| peak expiratory flow | The maximum flow at the outset of forced expiration, which is reduced in proportion to the severity of airway obstruction, as in asthma. (05 Mar 2000) |
|---|---|
| peak expiratory flow rate | Measurement of the maximum rate of airflow attained during a forced vital capacity determination. Common abbreviations are pefr and pfr. (12 Dec 1998) |
| peak flow | <chest medicine, physiology> The maximum flow rate of air breathed out during forced expiration. (15 Nov 1997) |
| peak flow rate | Maximum urinary flow rate during voiding as measured by a uroflowmeter. (05 Mar 2000) |
| laminar air flow unit | An air-filtering system used at some transplant facilities to remove particulate matter and fungi from the air. (16 Dec 1997) |
| blood glucose meter | A machine that helps test how much glucose (sugar) is in the blood. A specially coated strip containing a fresh sample of blood is inserted in a machine, when then calculates the correct level of glucose in the blood sample and shows the result in a digital display. Some meters have a memory that can store results from multiple tests. (09 Oct 1997) |
| candle-meter | A unit of light or illumination; the reception of a luminous flux of 1 lumen per square meter of surface. Synonym: candle-meter, meter-candle. Abbreviation: lx Origin: L. Light (05 Mar 2000) |
| rate meter | A device that continuously displays the magnitude of events averaged over varying time intervals. (05 Mar 2000) |
| ventilation meter | A meter used to measure tidal and minute ventilatory volumes. (05 Mar 2000) |
| Venturi meter | A device for measuring flow of a fluid in terms of the drop in pressure when the fluid flows into the constriction of a Venturi tube. (05 Mar 2000) |
| gram-meter | <unit> A unit of energy equal to 100 gram-centimeters. (05 Mar 2000) |
| meter | 1. One who, or that which, metes or measures. See Coal-meter. 2. An instrument for measuring, and usually for recording automatically, the quantity measured. Dry meter, a gas meter having measuring chambers, with flexible walls, which expand and contract like bellows and measure the gas by filling and emptying. Wt meter, a gas meter in which the revolution of a chambered drum in water measures the gas passing through it. Origin: From Mete to measure. Source: Websters Dictionary (01 Mar 1998) |
| meter angle | The amount of convergence required to view binocularly an object 1 meter distant and exerting 1 diopter of accommodation. Synonym: unit of ocular convergence. (05 Mar 2000) |
| meter-candle | A unit of light or illumination; the reception of a luminous flux of 1 lumen per square meter of surface. Synonym: candle-meter, meter-candle. Abbreviation: lx Origin: L. Light (05 Mar 2000) |
| meter-kilogram-second system | An absolute system based on the meter, kilogram, and second; the basis of the International System of Units. (05 Mar 2000) |