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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.

Scientists studying ancient microfossils from Brazil have discovered that structures once believed to be traces left behind by tiny animals were actually formed by communities of microscopic bacteria and algae.

From Science Daily • May 12, 2026

The coral microbiome includes bacteria, archaea, fungi, viruses, and algae that live on and inside coral tissue.

From Science Daily • May 8, 2026

Extra nutrients lead to the growth of algae, smothering seagrass beds, blocking sunlight and depleting the water of oxygen.

From BBC • May 2, 2026

The Appalachian springsnail is basically a tiny aquatic cow that mows over algae and other organic matter, sucking them up and extracting whatever nutrients it can.

From Slate • Apr. 27, 2026

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

From "Life of Pi" by Yann Martel




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