| VAT | variable antigen type; ventricular accommodation test; ventricular activation time; vesicular amine ... |
|---|---|
| PAS | 1) Periodic Acid-Schiff Stain 2) Para-Amino-Salicyclic Acid &nbs... |
| DSD | depression spectrum disease; discharge summary dictated; dry sterile dressing |
| EADS | early amnion deficit spectrum or syndrome |
| PSD | particle size distribution; peptone, starch, and dextrose; periodic synchronous discharge; phase-sen... |
| prolonged action tablet | sustained action tablet |
|---|---|
| sparing action | The manner in which a nonessential nutritive component, by its presence in the diet, lowers the dietary requirement for an essential component; thus, nonessential l-cysteine spares essential l-methionine and nonessential l-tyrosine spares essential l-phenylalanine. Synonym: sparing phenomenon. (05 Mar 2000) |
| specific action | The action of a drug or a method of treatment which has a direct and especially curative effect upon a disease, e.g., the action of vitamin B12 in pernicious anaemia. (05 Mar 2000) |
| specific dynamic action | The increase of heat production caused by the ingestion of food, especially of protein. (05 Mar 2000) |
| delayed-action preparations | Dosage forms of a drug that act over a period of time. (12 Dec 1998) |
| thermogenic action | Increase of heat production of the body, as by the thyroid hormone. Synonym: thermogenic action. (05 Mar 2000) |
| law of mass action | <chemistry> This law states that the rate of a given chemical reaction is proportional to concentration of the reactants. (09 Oct 1997) |
| absorption spectrum | <chemistry> A graph of the amount of light a substance absorbs, plotted as a fuction of energy, frequency or wavelength. (15 Jan 1998) |
| antimicrobial spectrum | See: spectrum. (05 Mar 2000) |
| broad spectrum | <pharmacology> Often used to describe an antibiotic that is effective against a wide range of microorganisms. (13 Nov 1997) |
| broad spectrum antibiotic | An antibiotic having a wide range of activity against both Gram-positive and Gram-negative organisms. (05 Mar 2000) |
| Raman spectrum | The characteristic array of light produced by the Raman effect. (05 Mar 2000) |
| visible spectrum | That part of electromagnetic radiation that is visible to the human eye; it extends from extreme red, 7606 A |
| chromatic spectrum | The continuum of colours that white light forms on passing through a prism or diffraction grating. Synonym: colour spectrum. (05 Mar 2000) |
| colour spectrum | The continuum of colours that white light forms on passing through a prism or diffraction grating. Synonym: colour spectrum. (05 Mar 2000) |