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.
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
The first is effectively addressing nutrient pollution, which is the main cause of the blue-green algal crisis in Lough Neagh.
From BBC ● Jun. 24, 2026
Instead of the previous blue-green algae, the new green algae is "just taking over," Paerl said.
From Barron's ● Jun. 21, 2026
We opened the front door and switched on the fluorescent lights, which blinked on, bathing the rows of lathes and shapers and drill presses in a harsh blue-green glare.
From "October Sky" by Homer Hickam
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.
