noun, plural zo·o·xan·thel·lae [zoh-uh-zan-thel-ee] /ˌzoʊ ə zænˈθɛl i/.
- any of various symbiotic yellow-green or yellow–brown algae in the cytoplasm of certain radiolarians and marine invertebrates.
noun, plural zo·o·xan·thel·lae [zoh-uh-zan-thel-ee] /ˌzoʊ ə zænˈθɛl i/.