A yellowish-brown symbiotic dinoflagellate present in large numbers in the cytoplasm of many marine invertebrates.‘The plants are tiny single-celled algae, the zooxanthellae or symbiotic dinoflagellates, that live within the tissues of corals in great numbers.’
- ‘It is not known whether rugose corals had symbiotic photosymbiotic zooxanthellae as modern corals do.’
- ‘The zooxanthellae in these corals are dinoflagellates, and it is suspected that there may be a relationship between their diversifications.’
- ‘These zooxanthellae may be found in many marine invertebrates, including sponges, corals, jellyfish, and flatworms, as well as within protists, such as ciliates, foraminiferans, and colonial radiolarians.’
- ‘Both coral and sponge were sparse, and the former largely without color - giving symbiotic zooxanthellae.’
Late 19th century modern Latin, from zoo-‘of animals’ + Greek xanthos ‘yellow’ + the diminutive suffix -ella.
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