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.
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
During the warm months, Lake Erie becomes an ideal setting for cyanobacteria, also known as blue-green algae, to grow rapidly.
From Science Daily • Dec. 2, 2025
In recent years large blooms of potentially toxic blue-green algae in Lough Neagh – caused in large part by long-term pollution – have grabbed the headlines.
From BBC • Sep. 24, 2025
When this occurs, blue-green algae can form blooms that discolour the water, or produce floating mats or scums on the water's surface.
From BBC • Sep. 9, 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.
