algae
Pronunciation
Noun
A2 Elementary
Quick answer
Simple, mostly water-dwelling organisms that resemble plants but usually lack true roots, stems, or leaves.
Usage notes
"Algae" is technically the plural form (the singular is "alga"), though many speakers use it with a singular verb anyway.
Test yourself
Which word fits the gap? "A thick layer of green _____ covered the pond's surface by midsummer."
Answer: algae
In your own words, what does "algae" mean?
Simple, mostly water-dwelling organisms that resemble plants but usually lack true roots, stems, or leaves.
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