- any of various symbiotic green algae in the cytoplasm of certain freshwater invertebrates, as stentors and hydras.
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Examples from the Web for zoochlorella
They may be colorless, or yellow and green through the presence of Zoochlorella.
Diameter 25 to 80µ; pseudopodia twice as long as the body diameter; the plasm often contains chlorophyll bodies (Zoochlorella).
The plasm is colorless or green by the presence of Zoochlorella, or colored brown or black by pigments.
Colorless forms of medium size-in some cases they may be green by Zoochlorella.