- belonging or pertaining to the group Prototheria, comprising the monotremes.
- a prototherian animal.
Origin of prototherian
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for prototherian
And on this view may be explained the retention of Prototherian characters.The Cambridge Natural History, Vol X., Mammalia
Frank Evers Beddard
- of, relating to, or belonging to the Prototheria, a subclass of mammals that includes the monotremes
- any prototherian mammal; a monotreme
C19: New Latin, from proto- + Greek theria wild animals