| real-time ultrasonography | Rapid serial ultrasound images produced using a phased array or scanning transducer; produces a video display of organ motion, such as heart valve or foetal motion. (05 Mar 2000) |
|---|---|
| real | Royal; regal; kingly. "The blood real of Thebes." 1. Actually being or existing; not fictitious or imaginary; as, a description of real life. "Whereat I waked, and found Before mine eyes all real, as the dream Had lively shadowed." (Milton) 2. True; genuine; not artificial; counterfeit, or factitious; often opposed to ostensible; as, the real reason; real Madeira wine; real ginger. "Whose perfection far excelled Hers in all real dignity." (Milton) 5. Relating to things, not to persons. "Many are perfect in men's humors that are not greatly capable of the real part of business." (Bacon) 4. <mathematics> Having an assignable arithmetical or numerical value or meaning; not imaginary. 5. Pertaining to things fixed, permanent, or immovable, as to lands and tenements; as, real property, in distinction from personal or movable property. Chattels real, a burden imposed upon one estate in favor of another estate of another proprietor. Synonym: Actual, true, genuine, authentic. Real, Actual. Real represents a thing to be a substantive existence; as, a real, not imaginary, occurrence. Actual refers to it as acted or performed; and, hence, when we wish to prove a thing real, we often say, "It actually exists," "It has actually been done." Thus its really is shown by its actually. Actual, from this reference to being acted, has recently received a new signification, namely, present; as, the actual posture of affairs; since what is now in action, or going on, has, of course, a present existence. An actual fact; a real sentiment. "For he that but conceives a crime in thought, Contracts the danger of an actual fault." (Dryden) "Our simple ideas are all real; all agree to the reality of things." (Locke) Origin: LL. Realis, fr. L. Res, rei, a thing: cf. F. Reel. Cf. Rebus. Source: Websters Dictionary (01 Mar 1998) |
| real focus | The point of meeting of convergent rays. (05 Mar 2000) |
| real image | An image formed by the convergence of the actual rays of light from an object. Synonym: inverted image. (05 Mar 2000) |
| image real | <microscopy> An image as formed by a lens on a screen, plate or any plane surface. See: image, virtual. (05 Aug 1998) |
| activated clotting time | The most common test used for coagulation time in cardiovascular surgery. (05 Mar 2000) |
| activated partial thromboplastin time | The time needed for plasma to form a fibrin clot following the addition of calcium and a phospholipid reagent; used to evaluate the intrinsic clotting system. (05 Mar 2000) |
| A-H conduction time | Forward conduction of the cardiac impulse from atria to ventricles via the A-V node or any bypass tract, represented in the electrocardiogram by the P-R interval. P-H conduction time is from the onset of the P wave to the first high frequency component of the His bundle electrogram (normally 119 ± 38 msec); A-H conduction time is from the onset of the first high frequency component of the atrial electrogram to the first high frequency component of the His bundle electrogram (normally 92 ± 38 msec); P-A conduction time is from the onset of the P wave to the onset of the atrial electrogram (normally 27 ± 18 msec). (05 Mar 2000) |
| association time | Time elasping between a stimulus and the verbalised response to it. (05 Mar 2000) |
| biologic time | The concept that our appreciation of time varies with age and is governed by the neural organization of the individual; it obeys a logarithmic rather than an arithmetic law. (05 Mar 2000) |
| bleeding time | <haematology> A test which measures the time it takes for small blood vessels to close off and bleeding to stop. Abnormal results can be seen in those with congenital or acquired platelet function disorders or thrombocytopenia. (27 Sep 1997) |
| blood circulation time | Determination of the shortest time interval between the injection of a substance in the vein and its arrival at some distant site in sufficient concentration to produce a recognizable end result. It represents approximately the inverse of the average velocity of blood flow between two points. (12 Dec 1998) |
| P-A conduction time | See: atrioventricular conduction. (05 Mar 2000) |
| generation time | <cell biology> Time taken for a cell population to double in numbers and thus equivalent to the average length of the cell cycle. (18 Nov 1997) |
| reaction time | The time from the onset of a stimulus until the organism responds. (12 Dec 1998) |