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.
Last year, scientists in the country announced they had launched successful trials spraying the soil with cyanobacteria, also known as "blue-green algae" -- a method that helps retain moisture and facilitate tree rooting.
From Barron's • Dec. 18, 2025
Those sown in August are currently just tiny blue-green shoots.
From Los Angeles Times • Nov. 21, 2025
These findings show that marine algae have evolved specialized pigments not only to absorb the blue-green light available underwater but also to withstand the damaging effects of intense sunlight.
From Science Daily • Oct. 22, 2025
Lough Neagh, like many other freshwater bodies including Lough Erne, is once again experiencing blue-green algal blooms.
From BBC • Aug. 30, 2025
In the winter, the river was blue-green in the narrow fast-moving spots.
From "The Joy Luck Club" by Amy Tan
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.
