blue-green
Americannoun
Etymology
Origin of blue-green
First recorded in 1850–55
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
GUILIN, China—More than a millennium ago, the Tang dynasty writer Han Yu said of Guilin’s landscape, “The river forms a blue-green silk ribbon, the mountains are like jade hairpins.”
From The Wall Street Journal ● Sep. 8, 2026
The authority said recent testing had confirmed the presence of blue-green algae, a naturally occurring phenomenon that can develop in still water during prolonged periods of hot weather and which can be harmful to wildlife.
From BBC ● Aug. 4, 2026
For one business owner based at Camlough Lake, the return of blue-green algae has had an immediate impact.
From BBC ● Jul. 26, 2026
A spokesperson for Armagh City, Banbridge and Craigavon Borough Council said watersports activities and open-water swimming at Craigavon Lakes were suspended on 21 July due to the presence of blue-green algae.
From BBC ● Jul. 26, 2026
It was blue-green, seemed to come from down in the water, and at first it startled and frightened him.
From "The Voyage Of The Frog" by Gary Paulsen
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