dry-bulb thermometer
RareTechnical/Professional
Definition
Meaning
A standard thermometer that measures the actual air temperature without any artificial cooling or modification.
A basic temperature-measuring device, often used in contrast to a wet-bulb thermometer in psychrometry to determine atmospheric humidity and other thermodynamic properties.
Linguistics
Semantic Notes
The term is almost exclusively used in technical contexts, particularly meteorology, HVAC engineering, and industrial process control. It is rarely used in isolation and typically appears in the phrase 'dry-bulb temperature.'
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling of related terms like 'humidity' and 'temperature' is consistent. The compound noun structure is identical.
Connotations
Purely technical and neutral in both dialects.
Frequency
Equally rare and specialized in both British and American English.
Vocabulary
Collocations
Grammar
Valency Patterns
The [dry-bulb thermometer] indicated [temperature].Compare the reading from the [dry-bulb thermometer] with the [wet-bulb thermometer].[Dry-bulb temperature] is measured using a [dry-bulb thermometer].Vocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Rarely used. Might appear in technical specifications for building climate control or industrial machinery.
Academic
Used in engineering, physics, and meteorology textbooks and papers concerning thermodynamics and humidity measurement.
Everyday
Virtually never used in everyday conversation. The simple term 'thermometer' is used instead.
Technical
Primary context. Used in HVAC design, weather station instrumentation, industrial process control, and scientific experiments involving psychrometry.
Examples
By Part of Speech
verb
British English
- The technician will dry-bulb the air sample.
- (Note: 'to dry-bulb' is highly non-standard and practically unattested in real use.)
American English
- (Not used as a verb.)
adverb
British English
- (Not used as an adverb.)
American English
- (Not used as an adverb.)
adjective
British English
- We need the dry-bulb reading.
- The dry-bulb measurement is crucial.
American English
- Record the dry-bulb data first.
- Check the dry-bulb value on the chart.
Examples
By CEFR Level
- This is a thermometer.
- It tells us the temperature.
- A common thermometer measures the dry-bulb temperature.
- For the weather report, we use a simple thermometer.
- Meteorologists use both a dry-bulb and a wet-bulb thermometer to calculate humidity.
- The dry-bulb reading was 22°C, while the wet-bulb was only 16°C.
- The psychrometric chart requires the input of the dry-bulb temperature, which is obtained directly from a dry-bulb thermometer.
- In the HVAC system's design, the maximum dry-bulb temperature for the locality is a critical design parameter.
Learning
Memory Aids
Mnemonic
Think of a thermometer with its bulb kept DRY to measure just the air's heat, not the cooling effect of evaporation (which is what a WET-bulb measures).
Conceptual Metaphor
BASELINE / STANDARD (The dry-bulb reading is the fundamental, unmodified measurement against which other values, like wet-bulb temperature, are compared.)
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid a direct, word-for-word translation like 'сухая-лампочка термометр'. The concept is specific and 'dry-bulb' is a fixed technical term.
- The 'bulb' refers to the reservoir at the bottom of the thermometer containing the liquid, not an electric light bulb ('лампа').
Common Mistakes
- Using 'dry-bulb thermometer' to refer to any thermometer.
- Pronouncing it as three separate, unlinked words without the compound noun stress pattern.
- Confusing it with a 'dry thermometer' (not a standard term).
Practice
Quiz
What is the primary purpose of a dry-bulb thermometer?
FAQ
Frequently Asked Questions
In principle, no. Any standard thermometer that measures air temperature is a dry-bulb thermometer. The term is only used to specifically distinguish it from a wet-bulb thermometer in technical contexts.
The 'bulb' is the part of the thermometer containing the liquid (e.g., mercury or alcohol). It is called 'dry' to indicate it is not covered by a moistened wick, which would cause cooling by evaporation, as in a wet-bulb thermometer.
You are most likely to encounter it in fields like heating, ventilation, and air conditioning (HVAC), meteorology, industrial process engineering, and agricultural science—anywhere precise measurement of air humidity is required.
In everyday language, absolutely. You only need the full term 'dry-bulb thermometer' when you are specifically contrasting it with a wet-bulb thermometer or discussing technical aspects of humidity measurement.