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.
About 40 notice boards alerting visitors to blue-green algae blooms, which can produce toxins that make humans ill and be fatal to pets, will be installed at Windermere, in the Lake District.
From BBC ● Aug. 12, 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
But life did not evolve much beyond blue-green algae for three billion years, which suggests that large lifeforms with specialized organs are hard to evolve, harder even than the origin of life.
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.
