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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.

The Plymouth Marine Laboratory has been using equipment including satellites and drones to monitor the waters, testing levels of viruses and bacteria, and looking at the numbers of different species of algae.

From BBC • Apr. 15, 2026

Although fossils had previously been discovered in eastern Yunnan, they were limited to algae and did not include animal remains.

From Science Daily • Apr. 6, 2026

Plus, the energy industry reckons with higher prices, and how Exxon touted its algae biofuel despite scientists’ doubts.

From The Wall Street Journal • Apr. 5, 2026

Some cichlids evolved into predators, while others specialized in feeding on algae, sifting sand, or consuming plankton.

From Science Daily • Apr. 1, 2026

Once the photosynthetic cells had appeared, very probably counterparts of today’s blue-green algae, the future respiratory mechanism of the earth was set in place.

From "The Lives of a Cell" by Lewis Thomas




Vocabulary lists containing algae