| LR | labeled release; laboratory references; laboratory report; labor room; lactated Ringer [solution]; l... |
|---|---|
| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
| ARD | absolute reaction of degeneration; acute radiation disease; acute respiratory disease; adult respira... |
| AAR | active avoidance reaction; acute articular rheumatism; antigen-antiglobulin reaction |
| CFR | case-fatality ratio; citrovorum-factor rescue; Code of Federal Regulations; complement-fixation reac... |
| absolute leukocytosis | An actual increase in the total number of leukocytes in the circulating blood, as distinguished from a relative increase (such as that observed in dehydration). (05 Mar 2000) |
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| absolute oils | Essential oils that are obtained by the removal of insoluble compounds from concrete oils. (05 Mar 2000) |
| absolute pressure | Pressure measured with respect to zero pressure. Compare: gauge pressure. (05 Mar 2000) |
| absolute refractory period | The period following excitation when no response is possible regardless of the intensity of the stimulus. (05 Mar 2000) |
| absolute risk | <statistics> The excess risk due to exposure to a specific hazard (disease, injury, etc.) (15 Jan 1998) |
| absolute scale | An obsolete term for Kelvin scale. (05 Mar 2000) |
| absolute scotoma | A scotoma in which there is no perception of light. (05 Mar 2000) |
| absolute system of units | A system based on absolute units accepted as being fundamental (length, mass, time) and from which other units (force, energy or work, power) are derived; such system's in common use are the foot-pound-second, centimeter-gram-second, and meter-kilogram-second system's. (05 Mar 2000) |
| absolute temperature | Temperature reckoned in Kelvins from absolute zero. (05 Mar 2000) |
| absolute terminal innervation ratio | The number of motor endplates divided by the number of terminal axons related to them. (05 Mar 2000) |
| absolute threshold | The lowest limit of any perception whatever. Compare: differential threshold. Synonym: stimulus threshold. (05 Mar 2000) |
| absolute unit | A unit whose value is constant regardless of place or time and not derived from dependent on gravitation. (05 Mar 2000) |
| absolute viscosity | Force per unit area applied tangentially to a fluid, causing unit rate of displacement of parallel planes separated by a unit distance; units in CGS system: poise. (05 Mar 2000) |
| absolute zero | <chemistry, physics> This is the lowest possible temperature (0 Kelvin, -273.15 degrees Celsius, -459.67 degrees Fahrenheit). at this temperature, all molecular motion stops. (15 Jan 1998) |
| atmosphere absolute | <physics> A unit of absolute pressure (also known as barometric pressure) expressed in atm. (05 Mar 2000) |