meter-, metro-, metr-, -metrical, -metrically, -metron, -metric, -metrist, -meter, -meters, -metry, -metre

(Greek: measure)

electrophotometer, photoelectric colorimeter
A colorimeter that uses a phototube or photocell, a set of color filters, an amplifier, and an indicating meter for quantitative determination of color.
electropsychometer, E-meter (s) (noun)
An electronic device manufactured by the Church of Scientology at their Gold Base production facility: "Known as an "E-meter", the electropsychometer measures changes in the electrical resistance of the human body by inducing a tiny electrical current through it."

"The face of the electropsychometer has a galvanometer that indicates changes in the person's resistance. According to Scientology doctrine, the resistance corresponds to the mental mass and energy of the subject's mind, which changes when the individual thinks of particular mental images or engrams (unconscious, painful memories)."

"These concepts are not validated by other scientists outside of Scientology; the action of the E-meter is more commonly attributed to galvanic skin response, an effect that is used in lie detectors."

1. An electroscope (device for detecting the presence of an electrostatic charge) of any of several designs suitable for the measurement of ionizing radiation arriving through the air.

Typically a microscopic, electrically conducting fiber (for example, silvered quartz) is suspended in a chamber, close to and connected with an insulated wire support where an electrostatic charge is applied, and similar charges deflect the fiber away from the support, the movement being monitored with a microscope and scale.

As the radiation of interest ionizes the enclosed gases, a slow discharge occurs, and the fiber retreats toward its resting position, the rate of movement indicating the intensity of the radiation.

2. A modified electroscope designed for the differentiation of radiant energy or energy contained in light rays or any other form of radiation; such as, X-rays or gamma rays.

An electroscope is an instrument for detecting the presence of electricity, or changes in the electric state of bodies, or the species of electricity present, by using pith balls, etc.

An instrument for determining the percentage of oil in a mixture; also, the specific gravity of oils.
A device used to measure the length and the pressure characteristics of the esophagus.
1. An instrument for measuring minute degrees of deformation caused by tension, twisting, etc.
2. An instrument for measuring the deformation of metal under stress, or an instrument in which such deformation is used to register the elastic strains borne by other materials (e.g. concrete).
fall phonometer, fallphonometer
An instrument used in experimental psychology designed to furnish sounds whose intensities are in known ratios by permitting balls to drop from different heights upon plates of metal or slate.

Related "measure" and "metric" words and charts: mens-; Metric Chart of Units; Metric-Length Converter; Metric Units and Links.