monotrematic en · ADJ
Etymology
From monotreme + -atic.
Meanings
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(not-comparable, rare) Relating to the monotremes.
It is therefore far below the Trias that we must look for the quite hypothetical monotrematic ancestors of this last group.
1909, Depéret, Charles Jean Julien, 1854-1929, The transformations of the animal world, page 53:the monotrematic glands of the Ornithorhynchus give rise to a new mode of nutrition as regards the young.
1830, Zoological Society of London. Committee of Science and Correspondence, Proceedings, page 93: