lapse rate
C1Technical, Scientific
Definition
Meaning
The rate at which atmospheric temperature decreases with an increase in altitude.
Any rate of change or decrease over time or distance, such as the rate at which something declines, ceases, or expires.
Linguistics
Semantic Notes
Primarily a technical term in meteorology and climatology. Its secondary, non-scientific use is rare and often metaphorical, implying a steady, predictable decline.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage; it is a standardised scientific term in both variants.
Connotations
Purely technical and neutral in both varieties.
Frequency
Equally low-frequency in general language but standard in relevant technical fields in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
The [adiabatic] lapse rate is [6.5°C per kilometre].Scientists observed a [negative] lapse rate in the inversion layer.To calculate the [environmental] lapse rate, you need [temperature data at different altitudes].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[None directly associated with the term]”
Usage
Context Usage
Business
Extremely rare; possibly in high-level reports on climate-related industries.
Academic
Common in atmospheric science, geography, physics, and environmental studies textbooks and papers.
Everyday
Virtually never used in casual conversation.
Technical
The primary domain of use; essential terminology in meteorology, aviation, and climatology.
Examples
By Part of Speech
verb
British English
- The contract will lapse if not renewed.
- His attention tended to lapse during long meetings.
American English
- The policy lapsed after the premium wasn't paid.
- She let her gym membership lapse.
adverb
British English
- [No direct adverbial form for 'lapse rate']
American English
- [No direct adverbial form for 'lapse rate']
adjective
British English
- A lapsed Catholic may still observe some traditions.
- He faced a lapse in judgement.
American English
- A lapsed subscription needs to be reactivated.
- The report noted a lapse in security protocols.
Examples
By CEFR Level
- The weather gets colder as you go up a mountain. Scientists measure this.
- Pilots must understand how temperature changes with height, which is called the lapse rate.
- The dry adiabatic lapse rate is a constant 9.8°C per kilometre, a key concept in meteorology.
- Anomalies in the environmental lapse rate can indicate atmospheric stability and potential for convective storms.
Learning
Memory Aids
Mnemonic
Imagine a hot air balloon LAPSING (falling) back to earth as the temperature drops RAPIDly at a specific RATE.
Conceptual Metaphor
CLIMATE IS A LAYERED SYSTEM; TEMPERATURE CHANGE IS A DESCENT (lapsing downwards).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating 'lapse' literally as 'промах' or 'оплошность'. The correct conceptual translation relates to 'градиент', 'понижение', or 'снижение'.
- The word 'rate' should be translated as 'градиент', 'скорость [понижения]' or 'величина падения', not just 'ставка' or 'норма'.
Common Mistakes
- Using 'lapse rate' to mean a rate of failure or mistake (semantic confusion with the verb 'to lapse').
- Pronouncing 'lapse' as /leɪps/ instead of /læps/.
- Treating it as a common compound noun with variable stress; primary stress is on 'lapse' (LAPSE rate).
Practice
Quiz
In which field is the term 'lapse rate' primarily used?
FAQ
Frequently Asked Questions
The International Standard Atmosphere defines a standard lapse rate of 6.5°C per kilometre up to 11 km.
Primarily yes, but the concept can be extended metaphorically to other quantities that decrease with height or time, though this is rare.
The adiabatic lapse rate is the theoretical temperature change of a rising or sinking air parcel without heat exchange. The environmental lapse rate is the actual measured temperature profile of the surrounding atmosphere.
Yes, a negative lapse rate (temperature increasing with height) is called a temperature inversion.