zooxanthella
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zooxanthella
(zō′ə-zăn-thĕl′ə)n. pl. zooxan·thellae (-thĕl′ē)
Any of various yellow-brown photosynthetic dinoflagellates that live symbiotically within the cells of other organisms, especially certain corals and other marine invertebrates.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.