blue-green algae
Americanplural noun
plural noun
Etymology
Origin of blue-green algae
First recorded in 1895–1900
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.
Any spell of sunny, settled weather will bring blue-green algae out in force, although the blooms have felt a little slow to start this year.
From BBC ● Jul. 26, 2026
Instead of the previous blue-green algae, the new green algae is "just taking over," Paerl said.
From Barron's ● Jun. 21, 2026
These nutrients make "harmful" blue-green algae more likely which can be dangerous to people and animals.
From BBC ● May 20, 2026
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
For most of the four billion years since the origin of life, the dominant organisms were microscopic blue-green algae, which covered and filled the oceans.
From "Cosmos" by Carl Sagan
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.
