ˌmid.əˈlāshēə noun plural
Usage: capitalized
Etymology: New Latin, from Mytilus + -acea
: a suborder of Filibranchia including the family Mytilidae and sometimes related families (as Pteriidae)
• myt·i·la·cean | ̷ ̷ ̷ ̷|lāshən adjective or noun
• myt·i·la·ceous -shəs adjective