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.
In recent years, large blooms of potentially toxic blue-green algae in Lough Neagh – caused in part by long-term pollution – have grabbed the headlines.
From BBC ● Jul. 14, 2026
The natural option, a blue-green microalgae called spirulina, proved to be too costly and thick in consistency, causing factory equipment to clog during candy production.
From Salon ● Jun. 29, 2026
How can Lough Neagh's blue-green algae problem be solved?
From BBC ● Jun. 24, 2026
Nevertheless, a cheeky portion of blue-green paint contorts itself into a standing position in the corner, fighting against the weight that urges the rest of the work Earthward.
From The Wall Street Journal ● May 29, 2026
In structure and pigment content they are the images of prokaryotic blue-green algae.
From "The Lives of a Cell" by Lewis Thomas
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.
