prototherian
pro to the ri an |ˌprōtəˈTHirēən ˌproʊtəˈθɪriən |Zoology ▶noun a mammal of the group Prototheria, which comprises the monotremes and their extinct relatives. ▶adjective relating to or denoting prototherians.
prototherian |ˌprəʊtə (ʊ )ˈθɪərɪən |Zoology ▶noun a mammal of the group Prototheria, which comprises the monotremes and their extinct relatives. ▶adjective relating to or denoting prototherians.
The Wordsmith Dictionary
The Wordsmith Dictionary