red snow: meaning, definition, pronunciation and examples
C1scientific/technical, literary
Quick answer
What does “red snow” mean?
Snow that appears red or pink due to the presence of microscopic algae, particularly Chlamydomonas nivalis, which contains a red pigment.
Audio
Pronunciation
Definition
Meaning and Definition
Snow that appears red or pink due to the presence of microscopic algae, particularly Chlamydomonas nivalis, which contains a red pigment.
A natural phenomenon where snow takes on reddish hues, often observed in alpine, Arctic, or Antarctic regions during spring and summer; sometimes used metaphorically to describe unusual or striking natural occurrences.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; identical technical term in both varieties.
Connotations
Same scientific/literary connotations in both regions.
Frequency
Equally low frequency in both varieties, limited to specialized contexts.
Grammar
How to Use “red snow” in a Sentence
[red snow] + [verb: appears/melts/forms][observe/study] + [red snow][patches/fields] + [of red snow]Vocabulary
Collocations
Examples
Examples of “red snow” in a Sentence
verb
British English
- The snow is reddening due to algal growth.
- The slopes began to redden with algal bloom.
American English
- The snow reddened as the algae spread.
- Warming temperatures cause the snow to redden.
adverb
British English
- The snow lay redly across the plateau.
- The valley shone redly in the summer sun.
American English
- The glacier melted redly in patches.
- The field glowed redly at midday.
adjective
British English
- They studied the red-snow phenomenon.
- We observed red-snow algae under the microscope.
American English
- The red-snow effect was striking.
- Scientists collected red-snow samples.
Usage
Meaning in Context
Business
Not used.
Academic
Used in scientific papers on glaciology, microbiology, or climate science.
Everyday
Rare; might appear in nature documentaries or travel blogs about polar regions.
Technical
Standard term in environmental science for snow colored by algae.
Vocabulary
Synonyms of “red snow”
Strong
Neutral
Weak
Vocabulary
Antonyms of “red snow”
Watch out
Common Mistakes When Using “red snow”
- Using 'red snow' to describe snow reflecting red light (e.g., at sunrise).
- Capitalizing it as a proper noun (unless starting a sentence).
- Assuming it's always bright red (it's often pink or light red).
FAQ
Frequently Asked Questions
No, it is not harmful to humans, though it's advised not to consume it as with any untreated snow.
In alpine, Arctic, and Antarctic regions during warmer months when snow melts and algae bloom.
Yes, because the darker red color absorbs more solar radiation, reducing albedo and accelerating melt.
Yes, 'watermelon snow' is a common alternative name, sometimes referring to a pinkish variant with a faint scent.
Snow that appears red or pink due to the presence of microscopic algae, particularly Chlamydomonas nivalis, which contains a red pigment.
Red snow is usually scientific/technical, literary in register.
Red snow: in British English it is pronounced /ˌred ˈsnəʊ/, and in American English it is pronounced /ˌrɛd ˈsnoʊ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None”
Learning
Memory Aids
Mnemonic
Think 'red snow' like a natural watermelon slushy – it's snow tinted red by tiny algae, not by food coloring.
Conceptual Metaphor
Nature's warning sign (sometimes interpreted as an indicator of climate change effects); nature's artistry.
Practice
Quiz
What is the primary cause of red snow?