| duple | <mathematics> Duple ratio, that in which the antecedent term is double the consequent, as of 2 to 1, 8 to 4, etc. Alternative term for double. Origin: L. Duplus. See Double. Source: Websters Dictionary (01 Mar 1998) |
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| duplex | Duplex escapement, a peculiar kind of watch escapement, in which the scape-wheel has two sets of teeth. Duplex lathe, one for turning off, screwing, and surfacing, by means of two cutting tools, on opposite sides of the piece operated upon. Duplex pumping engine, a steam pump in which two steam cylinders are placed side by side, one operating the valves of the other. Duplex querela; Latin; double complaint. A complaint in the nature of an appeal from the ordinary to his immediate superior, as from a bishop to an archbishop. Duplex telegraphy, a system of telegraphy for sending two messages over the same wire simultaneously. Duplex watch, one with a duplex escapement. Alternative forms: double, twofold. Origin: L, fr. Duo two + plicare to fold. Source: Websters Dictionary (01 Mar 1998) |
| duplex Doppler scan | A method of visualizing and selectively assessing the flow patterns of peripheral arteries and veins using ultrasound imaging and pulsed Doppler. (05 Mar 2000) |
| duplex echocardiography | Use of Doppler ultrasonography techniques to augment two-dimensional echocardiography by allowing velocities to be registered within the echocardiographic image. See: duplex ultrasonography, Doppler ultrasonography. Synonym: duplex echocardiography. (05 Mar 2000) |
| duplex kidney | A kidney in which two pelviocaliceal systems are present. (05 Mar 2000) |
| duplex transmission | The passage of impulses in both directions through a nerve trunk. (05 Mar 2000) |
| duplex ultrasonography | The combination of real-time and Doppler ultrasonography. (05 Mar 2000) |
| duplex uterus | Any uterus with double lumen (u. Didelphys, uterus bicornis bicollis, or septate uterus). Synonym: uterus duplex. (05 Mar 2000) |