Wiktionary
mamavirus
n. (context biology English) A member of the (taxlink Mamavirus genus noshow=1) genus of family (taxlink Mimiviridae family noshow=1), even larger than a mimivirus.
Wikipedia
Mamavirus
Mamavirus is a large and complex virus in the Group I family mimiviridae. The virus is exceptionally large, and larger than many bacteria. Mamavirus and other mimiviridae belong to nucleocytoplasmic large DNA virus (NCLDVs) family. Mamavirus can be compared to the similar complex virus mimivirus; mamavirus was so named because it is similar to but larger than mimivirus.