from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. barometer
from the GNU version of the Collaborative International Dictionary of English
- n. Any instrument showing the changes in the weight of the atmosphere; also, less appropriately, any instrument that indicates or foreshadows changes of the weather, as a deep vial of liquid holding in suspension some substance which rises and falls with atmospheric changes.
from The Century Dictionary and Cyclopedia
- n. An instrument used to indicate changes in the pressure of the atmosphere without measuring its absolute weight. See weather-glass and storm-glass.
- n. A piece of physical apparatus used to demonstrate the upward pressure of the air.
Sorry, no etymologies found.
Wallis, I., and I. Beale, 1669: Some observations concerning the baroscope and thermoscope, made and communicated by Doctor I. Wallis at