Pronunciation: ˌ z ō - ə -zan- ' the-l ə
Function: noun
Inflected Form: plural -lae \ -( ˌ )l ē \
Etymology: New Latin, from zo- + xanth- + -ella (dim. suffix)
Date: circa 1891
: any of various symbiotic dinoflagellates that live within the cells of other organisms (as reef-building coral polyps)