| Mueller electronic tonometer | A Schiotz type tonometer that electronically indicates the extent of corneal indentation; may also have an attached recorder for continuous pressure readings (tonography). (05 Mar 2000) |
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| applanation tonometer | An instrument for determining ocular tension by application of a small flat disk to the cornea. (05 Mar 2000) |
| Mackay-Marg tonometer | A recording electronic applanation tonometer. (05 Mar 2000) |
| Gartner's tonometer | An apparatus for estimating the blood pressure by noting the force, expressed by the height of a column of mercury, needed to arrest pulsation in a finger encircled by a compressing ring. (05 Mar 2000) |
| refractory period of electronic pacemaker | The time required to restore full sensitivity after detecting cardiac activity or delivering a pacing impulse. (05 Mar 2000) |
| Goldmann's applanation tonometer | An applanation tonometer that flattens only 3 sq mm of cornea, used with a slitlamp. (05 Mar 2000) |
| pneumatic tonometer | A recording applanation tonometer operated by compressed gas. (05 Mar 2000) |
| Schiotz tonometer | An instrument that measures ocular tension by indicating the ease with which the cornea is indented. (05 Mar 2000) |
| electronic | 1. Pertaining to electrons. 2. Denoting devices or systems utilizing the flow of electrons in a vacuum, gas, or saemiconductor. (05 Mar 2000) |
| electronic cell counter | <apparatus, haematology> An automatic blood cell counter in which cells passing through an aperture alter resistance and are counted as voltage pulses, or in which cells passing through a flow cell deflect light. Some types of counter are capable of multiple simultaneous measurements on each blood sample; e.g., leukocyte count, red cell count, haemoglobin, haematocrit, and red cell indices. (21 Jun 2000) |
| electronic number | <chemistry> The number of electrons in the outermost orbit (valence shell) of an element. (05 Mar 2000) |
| electronic pacemaker | An electric device that can substitute for the normal cardiac pacemaker, controlling the heart's rhythm by artificial electric discharges. Synonym: electronic pacemaker. (05 Mar 2000) |
| electronic pacemaker load | The impedance to the output, the standard load being 500 ohms resistance ± 1%. (05 Mar 2000) |
| electronic potential | <chemistry, physiology> The measure (in volts) of electron pressure. A measure of the difference in electron concentrations between two compartments, such as either side of a cell membrane. (09 Oct 1997) |
| tonometer | 1. <physics> An instrument for determining the rate of vibrations in tones. 2. <physiology> An apparatus for studying and registering the action of various fluids and drugs on the excised heart of lower animals. An instrument for measuring tension, especially. That of the eyeball. Origin: Gr. A stretching, a tone. Source: Websters Dictionary (01 Mar 1998) |