nimbostratus
C2Technical/Meteorological
Definition
Meaning
A dark, thick, and featureless layer of cloud that typically brings continuous rain or snow.
Used metaphorically to describe a pervasive, gloomy, or oppressive atmosphere.
Linguistics
Semantic Notes
Specifically denotes a cloud genus (one of the ten main cloud types) characterized by its lack of structure and precipitation production. Not used for individual clouds but for an extensive, uniform layer.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning. The term is standardized in international meteorology.
Connotations
Slightly more likely to be used in everyday British weather reports (e.g., "...with extensive nimbostratus") than in American ones, where "rain clouds" or "overcast" is more common in non-technical contexts.
Frequency
Very low frequency in general discourse, exclusive to technical or educated descriptive contexts in both varieties.
Vocabulary
Collocations
Grammar
Valency Patterns
The sky was covered with [nimbostratus].[Nimbostratus] brought steady rain.A deck of [nimbostratus] obscured the hills.Vocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “A nimbostratus of gloom settled over the office. (metaphorical)”
Usage
Context Usage
Academic
Used in geography, environmental science, and meteorology textbooks and papers.
Everyday
Virtually never used in casual conversation except for deliberate, descriptive effect.
Technical
Standard term in weather forecasts (e.g., aviation, marine), cloud classification, and scientific reports.
Examples
By Part of Speech
noun
British English
- The Met Office forecast mentioned nimbostratus advancing from the west, promising a thoroughly wet afternoon for the fête.
American English
- Pilots were advised of widespread nimbostratus over the Midwest, leading to instrument flight rules conditions.
adjective
British English
- The nimbostratus conditions made for a dismal walk across the moor.
American English
- They hunkered down during the nimbostratus event, which dumped three inches of snow.
Examples
By CEFR Level
- The sky is grey and it's raining. I think those are rain clouds.
- The weather turned miserable as a thick, uniform layer of cloud, which I later learned was called nimbostratus, settled in for the day.
- Meteorologists distinguish nimbostratus from other stratiform clouds by its darker base and the fact that it produces continuous precipitation.
Learning
Memory Aids
Mnemonic
Think: NIMBO (like 'nimble'? No, from Latin 'nimbus' for rain) + STRATUS (a layer). So, a 'rain layer' cloud.
Conceptual Metaphor
Source: OPPRESSIVE COVERING. Target: SUSTAINED BAD MOOD / PERVASIVE NEGATIVITY (e.g., 'a nimbostratus of despair').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with "туча" (thundercloud/cumulonimbus). Nimbostratus is specifically a layered, non-stormy rain cloud. Closer to "слоисто-дождевые облака".
Common Mistakes
- Using it to refer to any dark cloud. Confusing it with cumulonimbus (thunderhead). Pluralizing as 'nimbostrati' (incorrect; the plural is 'nimbostratus' or 'nimbostratus clouds').
Practice
Quiz
Which of the following is the primary defining characteristic of nimbostratus?
FAQ
Frequently Asked Questions
No. While both are layered (stratus), nimbostratus is thicker, darker, and produces significant precipitation, whereas stratus is a thinner layer causing at most drizzle or light snow.
Typically not. Nimbostratus is optically thick, completely obscuring the sun or moon, unlike thinner stratus or altostratus where the sun's position might be discernible.
The emphasis is on the third syllable: 'stra'. In British English: /ˌnɪm.bəʊˈstreɪ.təs/. In American English: /ˌnɪm.boʊˈstreɪ.t̬əs/.
No, it is a specialized term from meteorology. Most native speakers would simply say 'rain clouds' or 'grey sky' in everyday conversation.