blue-green algae

American  

[bloo-green al-jee] / ˈbluˌgrin ˈæl dʒi /

plural noun

Microbiology.

1. cyanobacteria.

---

blue-green algae British  

plural noun

1. the former name for cyanobacteria

---

Etymology

Origin of blue-green algae

First recorded in 1895–1900

---

Example Sentences

See Examples For:

blue-green algae

"Water levels in the lake have gone down which meant the blue-green algae has grown even more than it has done in the previous years," he added.

From BBC ● Oct. 23, 2026

Experts are testing out a new method that could see a way to tackle blue-green algae blooms.

From BBC ● Oct. 23, 2026

In recent years, large blooms of potentially toxic blue-green algae in Lough Neagh – caused in part by long-term pollution – have grabbed the headlines.

From BBC ● Jul. 14, 2026

Instead of the previous blue-green algae, the new green algae is "just taking over," Paerl said.

From Barron's ● Jun. 21, 2026

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

Random Word

Spin the wheel and learn a new word!

---