I. ˌ ̷ ̷ ̷ ̷thəˈlāmēə
Etymology: New Latin, from poly- + Greek thalamos chamber + New Latin -ia — more at thalamus
synonym of tetrabranchia
II. noun plural
Usage: capitalized
Etymology: New Latin, from poly- + Greek thalamos + New Latin -ia
: a division of Foraminifera including those having a many-chambered shell or sometimes including all the Foraminifera
• poly·tha·la·mi·an | ̷ ̷ ̷ ̷ ̷ ̷| ̷ ̷mēən adjective
• poly·tha·lam·ic | ̷ ̷ ̷ ̷ ̷ ̷|lamik adjective