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Definitions

algae

[al-jee] / ˈæl dʒi /
NOUN
rootless, leafless plants living in water
Synonyms


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.

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Dozens of signs warning people about the dangers of algae poisoning are to be placed around England's largest lake.

From BBC Aug. 12, 2026

The neurotoxin can be produced by an algae called Pseudo-nitzschia, and “the warmer the ocean is, the more algae,” McGuire said.

From Los Angeles Times Aug. 10, 2026

Kimberly-Clark identified hesperaloe as a top contender among 70 candidates for potential new sources of fiber, including wheat straw, leftover corn, chicken feathers, seaweed and algae.

From The Wall Street Journal Aug. 7, 2026

Except, of course, keeping a massive outdoor pool pristine and leak-free is complicated, and Trump’s renovation flopped: The algae came back, joined by pieces of the pool’s new lining floating in the water.

From Slate Aug. 4, 2026

I ate algae throughout the day until my stomach could take no more.

From "Life of Pi" by Yann Martel

You may never have heard of this single-celled alga, but sailors and fishermen know its effect very well: the P. lunula algae are the organisms that occasionally make the see glow blue.

From Science Daily Nov. 18, 2024

The purpose of this brilliance remains unclear, especially because the alga lives too deep for it to be related to photosynthesis.

From Science Magazine May 21, 2024

Blue-green algae is not actually an alga but rather a type of bacteria called cyanobacteria.

From BBC Jul. 10, 2023

Giant kelp is the common name for Macrocystis pyrifera, a species of alga that grows into lush underwater forests along the coast of the northeastern Pacific Ocean, from Baja California north to southeastern Alaska.

From Scientific American Jul. 21, 2022

She is curious; she wants to know the difference between an alga and a lichen, a Diplodon char- ruanus and a Diplodon delodontus.

From "All the Light We Cannot See" by Anthony Doerr




Vocabulary lists containing algae


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