| IRC | inspiratory reserve capacity; instantaneous resonance curve; International Red Cross; International ... |
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| IVPF | isovolume pressure flow curve |
| KHC | kinetic hemolysis curve |
| ODC | oritidine decarboxylase; ornithine decarboxylase; oxygen dissociation curve |
| PPC | pentose phosphate cycle; peripheral posterior curve; plasma prothrombin conversion; pneumopericardiu... |
| probability curve | A graph of the gaussian (normal) distribution representing relative probabilities. (05 Mar 2000) |
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| Heidelberger curve | A graph of the quantity of precipitate formed as a function of the quantity of antigen added during the titration of an antibody with an antigen. Synonym: Heidelberger curve. (05 Mar 2000) |
| progress curve | A graphical representation of a chemical or enzyme-catalyzed reaction in which the product concentration or the substrate concentration or the ES binary complex are plotted against time. (05 Mar 2000) |
| pulse curve | <physiology> A tracing, called a pulse tracing, consisting of a series of curves corresponding with the beats of the heart, obtained by the application of the sphygmograph. Origin: Gr. Pulse + -gram. Source: Websters Dictionary (01 Mar 1998) |
| Hunter and Driffield curve | Sensitometric curve of radiographic film, a plot of the film density versus the logarithm of the relative exposure. Synonym: H and D curve, Hunter and Driffield curve. (05 Mar 2000) |
| species area curve | The curve on a graph produced when plotting the cumulative number of plant species found in a series of quadrats against the cumulative number or area of those quadrats, it is used to determine the number of quadrats sufficient to adequately survey the herbaceous understory. (09 Oct 1997) |
| Starling's curve | A graph in which cardiac output or stroke volume is plotted against mean atrial or ventricular end-diastolic pressure; with increasing venous return and atrial pressure the output proportionately increases until further increments overload the heart and the output falls. Synonym: Frank-Starling curve. (05 Mar 2000) |
| strength-duration curve | A graph relating the intensity of an electrical stimulus to the length of time it must flow to be effective. See: chronaxie, rheobase. (05 Mar 2000) |
| stress-strain curve | A curve showing the ratio of deformation to load during the testing of a material in tension. (05 Mar 2000) |
| suitability index curve | Graph that depicts the suitability of a physical habitat variable for a fish species or life stage, often assumed to depict the species' or life stage's relative preference for values of the variable. (09 Oct 1997) |
| distribution curve | A systematic grouping of data into classes or categories according to the frequency of occurrence of each successive value or ranges of such values, resulting in a graph of a frequency distribution. Synonym: frequency curve. (05 Mar 2000) |
| dose-effect curve | This is a graph drawn to show the relationship between the dose of a drug or other chemical and the magnitude of the graded effect that it produces. (09 Oct 1997) |
| dose-response curve | This is a graph to show the relation between the dose of a drug or other chemical and the degree of response it produces, as measured by the percentage of the exposed population showing a defined, often quantal, effect. (09 Oct 1997) |
| intracardiac pressure curve | Curve of pressure recorded within the atrium or ventricle (intra-atrial and intraventricular pressure curve's). (05 Mar 2000) |
| isovolume pressure-flow curve | The relationship between transpulmonary pressure and respiratory air flow, expressed as a function of lung volume. (05 Mar 2000) |