| NSD | Nairobi sheep disease; neonatal staphylococcal disease; neurosecretory dysfunction; night sleep depr... |
|---|---|
| LSD | laryngeal sound discrimination; least significant difference; least significant digit; low-sodium di... |
| HCG, hCG | Human Chorionic Gonadotropin; »ç¶÷À¶¸ð¼º¼º¼±ÀÚ±ØÈ£¸£¸ó 1. Placental Glycoprotein Hormone &nbs... |
| NSA | Neurological Society of America; normal serum albumin; no salt added; no significant abnormality; no... |
| HSD | Hallervorden-Spatz disease; honestly significant difference; hydroxysteroid dehydrogenase; hypertoni... |
| +/- SD | Significant difference in the mean |
|---|---|
| CSME | Clinically significant macular edema |
| NS | P=not significant |
| SO | significant other |
| P<0.05 | produced a significant |
| genetically significant dose | <physics, radiobiology> The genetically significant dose is that which, if received by every member of the population, would be expected to produce the same genetic injury to the population as do the actual doses received by the individuals irradiated. Thus, the genetically significant dose is the dose equivalent to the gonads weighted for the age and sex distribution in those members of the irradiated population expected to have offspring. The genetically significant dose is expressed in sieverts (or rem). Acronym: GSD (06 Aug 1998) |
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| prevention of significant deterioration | (PSD) Under the Clean Air act, a planning and management process for air quality when a new source of air pollution is proposed in an area where ambient air quality is better than applicable standards (areas of special importance). (05 Dec 1998) |
| significant | In statistics, probably resulting from something other than chance. (18 Nov 1997) |
| alveolar-arterial oxygen difference | The difference or gradient between the partial pressure of oxygen in the alveolar spaces and the arterial blood: P(A-a)02. Normally in young adults this value is less than 20 mm Hg. See: alveolar gas equation. (05 Mar 2000) |
| arteriovenous carbon dioxide difference | <physiology> The difference in carbon dioxide content (in ml per 100 ml blood) between arterial and venous blood. (05 Mar 2000) |
| arteriovenous oxygen difference | <physiology> The difference in the oxygen content (in ml per 100 ml blood) between arterial and venous blood. (05 Mar 2000) |
| A-V difference | <abbreviation> Arteriovenous difference of concentration of a substance. (05 Mar 2000) |
| brightness difference threshold | The smallest difference that can be perceived as a difference in brightness. Synonym: light difference. (05 Mar 2000) |
| rank-difference correlation | The relationship between paired series of measurements, each ranked according to magnitude, which yields a coefficient known as rho; the value of rho varies from zero (no relationship) to +1.00 (perfect relationship). (05 Mar 2000) |
| cation-anion difference | <biochemistry> The difference between the sum of the measured cations and anions in the plasma or serum calculated as follows: (Na + K) -(Cl + HCO3) = < 20 mmol/l. Elevated values may occur in diabetic or lactic acidosis; normal or low values occur in bicarbonate-losing metabolic acidoses. Synonym: cation-anion difference. (05 Mar 2000) |
| standard error of difference | A statistical index of the probability that a difference between two sample means is greater than zero. (05 Mar 2000) |
| difference | 1. The act of differing; the state or measure of being different or unlike; distinction; dissimilarity; unlikeness; variation; as, a difference of quality in paper; a difference in degrees of heat, or of light; what is the difference between the innocent and the guilty? "Differencies of administration, but the same Lord." (1 Cor. Xii. 5) 2. Disagreement in opinion; dissension; controversy; quarrel; hence, cause of dissension; matter in controversy. "What was the difference? It was a contention in public." (Shak) "Away therefore went I with the constable, leaving the old warden and the young constable to compose their difference as they could." (T. Ellwood) 3. That by which one thing differs from another; that which distinguishes or causes to differ;; mark of distinction; characteristic quality; specific attribute. "The marks and differences of sovereignty." (Davies) 4. Choice; preference. "That now be chooseth with vile difference To be a beast, and lack intelligence." (Spenser) 5. An addition to a coat of arms to distinguish the bearings of two persons, which would otherwise be the same. See Augmentation, and Marks of cadency, under Cadency. 6. <logic> The quality or attribute which is added to those of the genus to constitute a species; a differentia. 7. <mathematics> The quantity by which one quantity differs from another, or the remainder left after subtracting the one from the other. Ascensional difference. See Ascensional. Synonym: Distinction, dissimilarity, dissimilitude, variation, diversity, variety, contrariety, disagreement, variance, contest, contention, dispute, controversy, debate, quarrel, wrangle, strife. Origin: F. Difference, L. Differentia. Source: Websters Dictionary (01 Mar 1998) |
| difference equation | <epidemiology> The mathematical formulation corresponding to a discrete time model. (05 Dec 1998) |
| light difference | The difference in light sensitivity of the two eyes. Synonym: brightness difference threshold. (05 Mar 2000) |
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