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.
These nutrients make "harmful" blue-green algae more likely which can be dangerous to people and animals.
From BBC • May 20, 2026
The fancy vivid blue-green diamond is triangular in shape and "the size of the nail on your smallest finger" according to Fawcett.
From Barron's • May 13, 2026
Standing on two legs, the blue-green robot has claw-like grippers rather than hands and can lift up to 35 pounds.
From Los Angeles Times • Dec. 17, 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
A huge calendar with a picture of blue-green water hangs on the wall.
From "Towers Falling" by Jewell Parker Rhodes
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.
