aneroid
- adjective
- /ˈænəˌrɔɪd/
- Specialized
- The scientist preferred using an aneroid barometer for field work because it did not rely on mercury.
Examples
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An aneroid barometer is a reliable tool for measuring atmospheric pressure without liquid.
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Unlike mercury barometers, aneroid instruments are safer and more portable.
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An aneroid gauge is commonly used to measure pressure in modern machinery.
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The aneroid barometer is easy to read.
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I bought an aneroid altimeter for hiking.
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The hiking kit included an aneroid altimeter that helps gauge altitude safely.
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She used an aneroid gauge to accurately monitor the tire pressure in her car.
Compounds
- Specialized
A tool that measures air pressure without liquid, often using a small metal box
Surface Forms
Morphology
aneroid = an + eroid
Although the prefix 'an-' (not) is recognizable, the stem 'eroid' is not a standalone English word and the specific instrumental meaning ('not using liquid') is not transparently derived by most learners.
Etymology
Aneroid comes from Greek parts, with a- meaning 'not' and a part that meant 'water' or 'liquid', so it literally means 'without liquid'. That's why we call a gauge or barometer 'aneroid' when it does not use any liquid.