algae
nounUK /ˈæl.dʒiː/
US /ˈæl.dʒiː/
Algae are tiny or simple plants that live in water and make their own food from sunlight.
The pond turned green because algae were growing in it.
RELATED WORDS
OTHER MEANINGS
2. Simple living things that grow in damp places like rocks or tree bark.
Green algae covered the wet rocks near the waterfall.
3. A group of organisms used to make food and medicine.
Some algae are used to make healthy food supplements.
4. Tiny water plants that can make lakes look green.
Too much algae made the lake look like green paint.