noun. An instrument for measuring atmospheric pressure, used especially in weather forecasting.

noun. Something that registers or responds to fluctuations; an indicator.

noun. An instrument for measuring the weight or pressure of the atmosphere, invented by Evangelista Torricelli, an Italian mathematician and physicist, in 1643.

noun. An instrument for determining the weight or pressure of the atmosphere, and hence for judging of the probable changes of weather, or for ascertaining the height of any ascent.

noun. See Aneroid barometer, under Aneroid.

noun. a barometer with tube contracted at bottom to prevent rapid oscillations of the mercury, and suspended in gimbals from an arm or support on shipboard.

noun. a portable mercurial barometer with tripod support, and long scale, for measuring heights.

noun. a barometer having a tube bent like a hook with the longer leg closed at the top. The height of the mercury in the longer leg shows the pressure of the atmosphere.

noun. a barometer with recurved tube, and a float, from which a cord passes over a pulley and moves an index.

noun. An instrument for measuring atmospheric pressure.

noun. Anything used as a gauge or indicator.

noun. an instrument that measures atmospheric pressure

"Amphibians are what we call barometer species of our planet's health."

aneroid barometer  blakesley portable barometer  capillary depression of the barometer  dines's minimum barometer  glycerin barometer  

measuring device  measuring instrument  measuring system  

aneroid  aneroid barometer  barograph  mercury barometer  weatherglass  

photometer  tensiometer  

altimeter  anemometer  chronometer  compass  gauge  

aerological instrument  aneroid barometer  aneroidograph  barograph  barometrograph