| tessular | <chemistry> Tesseral. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| test | 1. A significant chemical reaction. 2. A reagent. For specific test. (18 Nov 1997) |
| test anxiety scale | A self-reporting test consisting of items concerning fear and worry about taking tests and physiological activity, such as heart rate, sweating, etc., before, during, and after tests. (12 Dec 1998) |
| test cross | Crossing of an unknown genotype to a recessive homozygote so that the phenotype of the progeny corresponds directly to the chromosomes carried by the parents of unknown genotype. In experimental genetics, a deliberate mating designed to test claims about the pattern of inheritance of one or more traits. Synonym: backcross. (05 Mar 2000) |
| test handle instrument | A root canal instrument the handle of which is similar to a collet chuck and which can be secured in position on the root canal instrument to adjust its effective length. (05 Mar 2000) |
| test injection | Intravenous injection of a few milliliters of radiographic contrast medium to screen for allergic or idiosyncratic responses. (05 Mar 2000) |
| test letter | See: test types. (05 Mar 2000) |
| test meal | Toast and tea, or crackers and tea, or gruel or other bland food, given to stimulate gastric secretion before withdrawing gastric contents for analysis, administration of food containing a substance thought to be responsible for symptoms, such as an allergic reaction. (05 Mar 2000) |
| test object | An object having very fine surface markings, mounted on a slide, used to determine the defining power of the objective lens of a microscope, the target in measurement of the visual field. (05 Mar 2000) |
| test profile | A combination of laboratory tests usually performed by automated methods and designed to evaluate organ systems of patients upon admission to a hospital or clinic. (05 Mar 2000) |
| test solution | A solution of some reagent, in definite strength, used in chemical analysis or testing. (05 Mar 2000) |
| test tube | A tube of thin glass closed at one end, used in the examination of urine and other chemical operations, for bacterial cultures, etc. (05 Mar 2000) |
| test types | Letters of various sizes used to test visual acuity. (05 Mar 2000) |
| test, fisher's exact | A statistical test of independence much used in medical research. It tests the independence of rows and columns in a 2 x 2 contingency table (with 2 horizontal rows crossing 2 vertical columns creating 4 places for data) based on the exact sampling distribution of the observed frequencies. Hence it is an exact test. Devised by the great british statistician r. A. Fisher (1890-1962). (12 Dec 1998) |
| test, glucose tolerance | After fasting, a specific amount (100 grams) of glucose is given by mouth, and the blood levels of this sugar are measured every hour. Normally, the blood glucose should return to normal within 2 to 2 1/2 hours. The gtt is considered a classic test of carbohydrate metabolism. It is much used in the diagnosis of diabetes. The gtt depends on a number of factors including the ability of the intestine to absorb glucose, the power of the liver to take up and store glucose, the capacity of the pancreas to produce insulin, and the amount of active insulin. (12 Dec 1998) |