mercurial barometer: meaning, definition, pronunciation and examples
C2technical, scientific, historical
Quick answer
What does “mercurial barometer” mean?
A type of barometer that uses a column of mercury in a glass tube to measure atmospheric pressure.
Audio
Pronunciation
Definition
Meaning and Definition
A type of barometer that uses a column of mercury in a glass tube to measure atmospheric pressure.
A classic, precise instrument for measuring atmospheric pressure, historically the standard for weather forecasting and scientific measurement before the widespread adoption of aneroid and digital barometers. Its operation relies on the balance between the weight of the mercury column and the atmospheric pressure.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or conceptual differences. Both varieties use the same term for the same instrument.
Connotations
Connotes precision, classic science, and historical meteorological practice in both dialects. May also carry connotations of being outdated or containing hazardous material (mercury).
Frequency
Equally low frequency in both varieties, restricted to technical, historical, or educational contexts discussing meteorological instruments.
Grammar
How to Use “mercurial barometer” in a Sentence
The [scientist/observer] measured the pressure with a mercurial barometer.A mercurial barometer consists of [a glass tube and a mercury reservoir].The reading on the mercurial barometer indicated [a fall in pressure].Vocabulary
Collocations
Examples
Examples of “mercurial barometer” in a Sentence
verb
British English
- [Not applicable. The term is a compound noun.]
American English
- [Not applicable. The term is a compound noun.]
adverb
British English
- [Not applicable.]
American English
- [Not applicable.]
adjective
British English
- [Not applicable. 'Mercurial' is an adjective, but 'mercurial barometer' is a noun phrase.]
American English
- [Not applicable. 'Mercurial' is an adjective, but 'mercurial barometer' is a noun phrase.]
Usage
Meaning in Context
Business
Virtually never used.
Academic
Used in history of science, physics, and meteorology courses or papers to describe historical measurement techniques.
Everyday
Extremely rare. A layperson might refer simply to a 'barometer' or 'old-fashioned barometer'.
Technical
Primary context. Used in meteorology, instrument calibration, scientific history, and environmental science to specify the technology.
Vocabulary
Synonyms of “mercurial barometer”
Strong
Neutral
Weak
Vocabulary
Antonyms of “mercurial barometer”
Watch out
Common Mistakes When Using “mercurial barometer”
- Misspelling as 'mercural barometer'.
- Using 'mercurial barometer' to refer to any old barometer (many old barometers are aneroid).
- Incorrect plural: 'mercurial barometers' (correct).
FAQ
Frequently Asked Questions
Rarely, due to the toxicity of mercury and the convenience of digital/aneroid instruments. They remain in use for high-precision calibration standards and in some educational or historical settings.
Mercury is much denser than water. This means a column of mercury sensitive to atmospheric pressure is about 13.6 times shorter than an equivalent water column, making the instrument more compact and practical.
Here, 'mercurial' is not related to the personality trait meaning 'changeable'. It is a direct reference to the element mercury (chemical symbol Hg), describing the instrument's working fluid.
The main concern is the toxicity of mercury vapour, especially if the glass tube breaks and the liquid mercury spills. Proper handling and disposal require specialised procedures.
A type of barometer that uses a column of mercury in a glass tube to measure atmospheric pressure.
Mercurial barometer is usually technical, scientific, historical in register.
Mercurial barometer: in British English it is pronounced /mɜːˌkjʊə.ri.əl bəˈrɒm.ɪ.tər/, and in American English it is pronounced /mɝːˈkjʊr.i.əl bəˈrɑː.mə.t̬ɚ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[Not applicable for this highly technical term. No common idioms exist.]”
Learning
Memory Aids
Mnemonic
Think of the Roman god MERCURY (who was fast and fluid) and a BAR for pressure. A MERCURIAL BAROMETER uses fluid mercury to 'bar' (measure) the pressure.
Conceptual Metaphor
PRESSURE IS WEIGHT / MEASUREMENT IS HEIGHT (The atmospheric pressure is conceptualized as a force that can support a specific weight/height of mercury).
Practice
Quiz
What is the primary functional component that distinguishes a mercurial barometer from other types?