| BETA | Biomedical Electronics Technicians Association |
|---|---|
| IFME | International Federation for Medical Electronics |
| AA | abdominal aorta; acetic acid; achievement age; active alcoholic; active assistive [range of motion];... |
| AU | according to custom [Lat. ad usum]; allergenic unit; ngstrom unit; antitoxin unit; arbitrary unit; A... |
| Au | Australia [antigen]; authorization; gold [Lat. aurum] |
acute angle
| dental engineering | <dentistry> Application of engineering principles to dentistry. (05 Mar 2000) |
|---|---|
| engineering | Originally, the art of managing engines; in its modern and extended sense, the art and science by which the mechanical properties of matter are made useful to man in structures and machines; the occupation and work of an engineer. In a comprehensive sense, engineering includes architecture as a mechanical art, in distinction from architecture as a fine art. It was formerly divided into military engineering, which is the art of designing and constructing offensive and defensive works, and civil engineering, in a broad sense, as relating to other kinds of public works, machinery, etc. Civil engineering, in modern usage, is strictly the art of planning, laying out, and constructing fixed public works, such as railroads, highways, canals, aqueducts, water works, bridges, lighthouses, docks, embankments, breakwaters, dams, tunnels, etc. Mechanical engineering relates to machinery, such as steam engines, machine tools, mill work, etc. Mining engineering deals with the excavation and working of mines, and the extraction of metals from their ores, etc. Engineering is further divided into steam engineering, gas engineering, agricultural engineering, topographical engineering, electrical engineering, etc. Source: Websters Dictionary (01 Mar 1998) |
| basic electrical rhythm | A slow wave of depolarisation of smooth muscle from the fundus to the pylorus that coordinates gastric peristalsis and emptying. (05 Mar 2000) |
| magneto-electrical | <physics> Pertaining to, or characterised by, electricity by the action of magnets; as, magneto-electric induction. Magneto-electric machine, a form of dynamo-electric machine in which the field is maintained by permanent steel magnets instead of electromagnets. Source: Websters Dictionary (01 Mar 1998) |
| mean electrical axis | The average magnitude and direction of all the electromotive forces developed during the cardiac event under consideration; e.g., atrial or ventricular depolarisation, or ventricular repolarization. See: axis deviation. (05 Mar 2000) |
| normal electrical axis | A mean electrical axis of the heart situated between -30 |
| instantaneous electrical axis | The resultant axis of the electromotive forces developing in the heart at any given moment. (05 Mar 2000) |
| electrical | 1. Pertaining to electricity; consisting of, containing, derived from, or produced by, electricity; as, electric power or virtue; an electric jar; electric effects; an electric spark. 2. Capable of occasioning the phenomena of electricity; as, an electric or electrical machine or substance. 3. Electrifying; thrilling; magnetic. "Electric Pindar." Electric atmosphere, or Electric aura. See Aura. Electrical battery. See Battery. Electrical brush. See Brush. Electric cable. See Telegraph cable, under Telegraph. Electric candle. See Candle. <medicine> Electric cat, any fish which has an electrical organ by means of which it can give an electrical shock. The best known kinds are the torpedo, the gymnotus, or electrical eel, and the electric cat. See Torpedo, and Gymnotus. Electric fluid, the supposed matter of electricity; lightning. <physics> Electrical image, the torpedo. Electric telegraph. See Telegraph. Origin: L. Electrum amber, a mixed metal, Gr.; akin to the beaming sun, cf. Skr. Arc to beam, shine: cf. F. Electrique. The name came from the production of electricity by the friction of amber. Source: Websters Dictionary (01 Mar 1998) |
| electrical alternans | Electrical alternation of the heart. (05 Mar 2000) |
| electrical alternation of heart | A disorder in which the ventricular or atrial complexes or both are regular in time but of alternating pattern; detected by electrocardiography. The P, QRS, T, QRS-T, or P-QRST alternate singly or in combination. (05 Mar 2000) |
| electrical axis | The net direction of the electromotive forces developed in the heart during its activation, usually represented in the frontal plane. See: triaxial reference system. (05 Mar 2000) |
| electrical conductivity | <radiobiology> Degree to which a substance conducts electric current. Can be defined by: (current density) = (conductivity) (applied electric field) Electrons and ions both contribute to current in proportion to their mobility in the system. In a plasma with a magnetic field, there is no longer a one-to-one correspondence between current and electric field. Instead, the current in each direction can be due to combinations of the electric fields in all the other directions. In this case, the current density and the electric field are vectors, and the conductivity becomes a tensor (matrix) which relates them. (09 Oct 1997) |
| electrical coupling | <physiology> General term for an intimate cytoplasmic contact, mediated by gap junctions, between touching cells, such that electrical current injected into either cell changes the membrane potential of both. In neurons, arrays of gap junctions form electrical synapses, that allow action potentials to pass directly between cells. However, electrical coupling is not confined to excitable cells: many embryonic and adult epithelia are coupled, possibly to allow metabolic cooperation. (18 Nov 1997) |
| electrical diastole | Period from end of T wave to beginning of next Q wave. (05 Mar 2000) |
| electrical failure | Failure in which the cardiac inadequacy is secondary to disturbance of the electrical impulse. (05 Mar 2000) |