What does bathometer mean?
A bathometer is a specialist instrument for measuring the depth of water, especially the sea. It is a deliberately technical term used in oceanography, hydrography, marine surveying, and historical instrumentation rather than in ordinary conversation. The instrument’s working depth is related to the pressure exerted by the water column, though designs may determine depth by other physical measurements. In contemporary use, electronic echo sounders often perform the same broader function, so bathometer is more likely to occur in technical histories and specialist literature. Its name combines the Greek bathos, “depth,” with a measuring element. The result is an authoritative word for an instrument with a precise purpose: determining how far below the surface a measurement is being made. The term conveys technical and historical overtones, making it useful in discussions of marine exploration and instrument design.
nounAn instrument for measuring the depth of water, especially the sea.
- A specialized instrument for measuring the depth of water, especially the ocean.
"The survey team used a bathometer to measure the depth at several stations."
"The survey team used a bathometer to measure the depth at several stations."
"The museum’s catalogue identifies the brass instrument as a bathometer used for underwater sounding."
The standard plural of bathometer.
"The researchers deployed three bathometers along the survey line."
Its Greek root means “depth,” but its English cousin bathos also means a sudden anticlimax—an unexpectedly theatrical name for an ocean-depth gauge.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of bathometer
The word combines batho-, from Greek bathos, “depth,” with the combining form -ometer, denoting a measuring instrument and ultimately related to Greek metron, “measure.” English formation followed the pattern of scientific terms such as barometer, and the word became established in technical and historical marine vocabulary. Its Greek relatives include bathos itself and forms based on bathys, “deep,” such as bathyscaph and bathysphere.
Related word forms
How bathometer is actually used
This is a comparatively uncommon, specialist term associated with oceanography, hydrography, marine surveying, and the history of scientific instrumentation. It is not normally used as an everyday synonym for depth gauge or depth sounder.
Easily confused with bathometer
A barometer measures atmospheric pressure, whereas a bathometer measures the depth of water.
A bathometer is a measuring instrument, while a bathysphere is a spherical submersible designed for deep-sea exploration.