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Meteorometer :: Meteorometer (n.) An apparatus which transmits automatically to a central station atmospheric changes as marked by the anemometer, barometer, thermometer, etc..

Rise :: Rise (v.) To reach a higher level by increase of quantity or bulk; to swell; as, a river rises in its bed; the mercury rises in the thermometer..

Pyrometer :: Pyrometer (n.) An instrument for measuring degrees of heat above those indicated by the mercurial thermometer.

Reaumur :: Reaumur (a.) Of or pertaining to Rene Antoine Ferchault de Reaumur; conformed to the scale adopted by Reaumur in graduating the thermometer he invented.

Aethrioscope :: Aethrioscope (n.) An instrument consisting in part of a differential thermometer. It is used for measuring changes of temperature produced by different conditions of the sky, as when clear or clouded..

Measure :: Measure (n.) To serve as the measure of; as, the thermometer measures changes of temperature..

Observation :: Observation (n.) Specifically, the act of measuring, with suitable instruments, some magnitude, as the time of an occultation, with a clock; the right ascension of a star, with a transit instrument and clock; the sun's altitude, or the distance of the moon from a star, with a sextant; the temperature, with a thermometer, etc..

Thermometrical :: Thermometrical (a.) Made, or ascertained, by means of a thermometer; as, thermometrical observations..

Mercury :: Mercury (n.) A metallic element mostly obtained by reduction from cinnabar, one of its ores. It is a heavy, opaque, glistening liquid (commonly called quicksilver), and is used in barometers, thermometers, ect. Specific gravity 13.6. Symbol Hg (Hydrargyrum). Atomic weight 199.8. Mercury has a molecule which consists of only one atom. It was named by the alchemists after the god Mercury, and designated by his symbol, /..

Centigrade :: Centigrade (a.) Of or pertaining to the centigrade thermometer; as, 10¡ centigrade (or 10¡ C.)..

Hygrodeik :: Hygrodeik (n.) A form of hygrometer having wet and dry bulb thermometers, with an adjustable index showing directly the percentage of moisture in the air, etc..

Registering :: Registering (a.) Recording; -- applied to instruments; having an apparatus which registers; as, a registering thermometer. See Recording..

At :: At (prep.) The relation of a point or position in a series, or of degree, rate, or value; as, with the thermometer at 80¡; goods sold at a cheap price; a country estimated at 10,000 square miles; life is short at the longest..

Delicate :: Delicate (a.) Affected by slight causes; showing slight changes; as, a delicate thermometer..

Rise :: Rise (n.) The distance through which anything rises; as, the rise of the thermometer was ten degrees; the rise of the river was six feet; the rise of an arch or of a step..

Celsius :: Celsius (n.) The Celsius thermometer or scale, so called from Anders Celsius, a Swedish astronomer, who invented it. It is the same as the centigrade thermometer or scale..

Thermometrical :: Thermometrical (a.) Of or pertaining to a thermometer; as, the thermometrical scale or tube..

Water Thermometer :: Water thermometer () A thermometer filled with water instead of mercury, for ascertaining the precise temperature at which water attains its maximum density. This is about 39? Fahr., or 4? Centigrade; and from that point down to 32? Fahr., or 0? Centigrade, or the freezing point, it expands..

Degree :: Degree (n.) A division, space, or interval, marked on a mathematical or other instrument, as on a thermometer..

Geothermometer :: Geothermometer (n.) A thermometer specially constructed for measuring temperetures at a depth below the surface of the ground.

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