What does hypsometer mean?
A hypsometer is a scientific instrument used to measure altitude or elevation. It commonly works by observing how atmospheric pressure changes with height or by using the variation in the boiling point of a liquid. The word is most often encountered in meteorology, surveying, mountaineering, and historical accounts of scientific exploration. In modern aviation, the more familiar term is “altimeter,” especially for an instrument that displays height above sea level. A hypsometer is not limited to aircraft and can be used in fixed or portable scientific setups. The word combines Greek elements meaning “height” and “measure,” accurately reflecting its long-standing role in determining the elevation of a place or the altitude of the atmosphere.
nounAn instrument for measuring altitude or elevation, typically by determining atmospheric pressure or the boiling point of a liquid at different heights.
- An instrument for measuring altitude or elevation, especially by means of atmospheric pressure or the boiling point of a liquid.
"The expedition used a hypsometer to measure the elevation of the mountain pass."
"The meteorologist calibrated the hypsometer before the balloon launch."
"By comparing readings from two hypsometers, the researchers calculated the height of the plateau."
The plural is formed by adding -s.
"The laboratory owns several calibrated hypsometers."
A hypsometer turns changes in atmospheric pressure into a map of elevation, making it an early scientific tool for measuring height.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does hypsometer come from?
Hypsometer was formed in the early 19th century from Greek hypsos, meaning “height,” and metron, meaning “measure.” The name reflects the instrument’s original function of determining elevation through changes in atmospheric pressure. Related English words include hypsometry and hypsometric, both of which concern the measurement of height.
Related word forms
How hypsometer is actually used
The term is chiefly technical or historical. It is less common in everyday speech than “altimeter,” although it is used in meteorology, surveying, and mountaineering.
Easily confused with hypsometer
An altimeter is an instrument that indicates altitude, especially altitude above sea level in an aircraft, whereas a hypsometer is a more general instrument for measuring height or elevation.