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
Sue Schwar, the founder of South Essex Wildlife Hospital, said she was "100% sure" the deaths had been caused by exposure to blue-green algae.
From BBC ● Aug. 4, 2026
In July 2025, testing found Canvey Lake contained 2.5 million cells of blue-green algae per millilitre, more than 100 times the warning threshold of 20,000 cells.
From BBC ● Aug. 4, 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
We were trailing a comet’s tail of light, orange-yellow in the center, with edges of blue-green and lavender.
From "Flying to the Moon: An Astronaut's Story" by Michael Collins
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
