rə̇ˌzidēˈāsēˌē noun plural
Usage: capitalized
Etymology: New Latin, from Rhizidium, type genus (from rhiz- + -idium ) + -aceae
: a family of fungi (order Chytridiales) that are mostly ectoparasites on various algae and that have a plant body with a globose fertile portion and a vegetative portion of tapering rhizoidal branches