| venous return | The blood returning to the heart via the great veins and coronary sinus. (05 Mar 2000) |
|---|---|
| total anomalous pulmonary venous return | <radiology> (TAPVR) admixture lesion: cyanosis, increased pulmonary blood flow, must have L to R shunt for survival (e.g., atrial septal defect) associated with, atrial septal defect, asplenia (12 Dec 1998) |
| return | 1. To turn back; to go or come again to the same place or condition. "Return to your father's house." "On their embattled ranks the waves return." (Milton) "If they returned out of bondage, it must be into a state of freedom." (Locke) "Dust thou art, and unto dust shalt thou return." (Gen. Iii. 19) 2. To come back, or begin again, after an interval, regular or irregular; to appear again. "With the year Seasons return; but not me returns Day or the sweet approach of even or morn." (Milton) 3. To speak in answer; to reply; to respond. "He said, and thus the queen of heaven returned." (Pope) 4. To revert; to pass back into possession. "And Jeroboam said in his heart, Now shall the kingdom return to the house of David." (1Kings xii. 26) 5. To go back in thought, narration, or argument. "But to return to my story." Origin: OE. Returnen, retournen, F. Retourner; pref. Re- re- + tourner to turn. See Turn. 1. The act of returning (intransitive), or coming back to the same place or condition; as, the return of one long absent; the return of health; the return of the seasons, or of an anniversary. "At the return of the year the king of Syria will come up against thee." (1 Kings xx. 22) "His personal return was most required and necessary." (Shak) 2. The act of returning (transitive), or sending back to the same place or condition; restitution; repayment; requital; retribution; as, the return of anything borrowed, as a book or money; a good return in tennis. "You made my liberty your late request: Is no return due from a grateful breast?" (Dryden) 3. That which is returned. Specifically: A payment; a remittance; a requital. "I do expect return Of thrice three times the value of this bond." (Shak) An answer; as, a return to one's question. An account, or formal report, of an action performed, of a duty discharged, of facts or statistics, and the like; as, election returns; a return of the amount of goods produced or sold; especially, in the plural, a set of tabulated statistics prepared for general information. The profit on, or advantage received from, labour, or an investment, undertaking, adventure, etc. "The fruit from many days of recreation is very little; but from these few hours we spend in prayer, the return is great." (Jer. Taylor) 4. The continuation in a different direction, most often at a right angle, of a building, face of a building, or any member, as a molding or mold; applied to the shorter in contradistinction to the longer; thus, a facade of sixty feet east and west has a return of twenty feet north and south. 5. The rendering back or delivery of writ, precept, or execution, to the proper officer or court. The certificate of an officer stating what he has done in execution of a writ, precept, etc, indorsed on the document. The sending back of a commission with the certificate of the commissioners. A day in bank. See Return day, below. 6. <astronomy> An official account, report, or statement, rendered to the commander or other superior officer; as, the return of men fit for duty; the return of the number of the sick; the return of provisions, etc. 7. The turnings and windings of a trench or mine. Return ball, a ball held by an elastic string so that it returns to the hand from which it is thrown, used as a plaything. Return bend, a pipe fitting for connecting the contiguous ends of two nearly parallel pipes lying alongside or one above another. Return day, a pipe by which water of condensation from a heater or radiator is conveyed back toward the boiler. Source: Websters Dictionary (01 Mar 1998) |
| return extrasystole | A form of reciprocal rhythm in which the impulse having arisen in the ventricle ascends toward the atria, but before reaching the atria is reflected back to the ventricles to produce a second ventricular contraction. (05 Mar 2000) |
| return on investment | (ROI) The interest rate at which the net present value of a project is zero. Multiple values are possible. (05 Dec 1998) |
| active length-tension curve | The relationship between active isometric tension and preload (rest length) for a contracting muscle. (05 Mar 2000) |
| alignment curve | The line passing through the centre of the teeth laterally in the direction of the curve of the dental arch. (05 Mar 2000) |
| anti-Monson curve | In dentistry, a curve of occlusion which is convex upward. Synonym: anti-Monson curve. (05 Mar 2000) |
| area under curve | A statistical means of summarizing information from a series of measurements on one individual. It is frequently used in clinical pharmacology where the auc from serum levels can be interpreted as the total uptake of whatever has been administered. As a plot of the concentration of a drug against time, after a single dose of medicine, producing a standard shape curve, it is a means of comparing the bioavailability of the same drug made by different companies. (12 Dec 1998) |
| area under the curve | A measure of how much of a drug reaches the bloodstream in a set period of time, usually 24 hours. AUC is calculated by plotting drug blood concentration at various times during a 24-hour or longer period and then measuring the area under the curve between 0 and 24 hours as shown in the figure to the right. (09 Oct 1997) |
| Barnes' curve | A curve corresponding in general with Carus' curve, being the segment of a circle whose centre is the promontory of the sacrum. (05 Mar 2000) |
| biphasic growth curve | <cell culture, microbiology> A particular type of growth curve seen in cultured microorganisms in which they have two exponential growth stages separated by a plateau phase. This double-hump curve is produced when the microbes are cultured using two carbon sources, one of which must be used up before the second can be used. (19 Jan 1998) |
| buccal curve | The line of the dental arch from the canine, or cuspid tooth to the third molar. (05 Mar 2000) |
| gaussian curve | Continuous frequency distribution of infinite range. Its properties are as follows: 1) continuous, symmetrical distribution with both tails extending to infinity; 2) arithmetic mean, mode, and median identical; and 3) shape completely determined by the mean and standard deviation. (12 Dec 1998) |
| receiver operating characteristic curve | A plot of true positive versus false positive results, usually in a trial of a diagnostic test. A graphical means of assessing the ability of a screening test to discriminate between healthy and diseased persons. Synonym: ROC curve. (05 Mar 2000) |