(ˌ)kamˌpanyələˈrīəˌdē noun plural
Usage: capitalized
Etymology: New Latin, from Campanularia, type genus + -idae
: a large family of marine hydrozoan polyps (suborder Leptomedusae) having globular manubria and comprising forms with free medusae (as those of the genus Obelia ) and others with the medusae replaced by sessile gonophores (as in the type genus Campanularia )