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M________
Definitions
the most primitive mammals comprising the only extant members of the subclass Prototheria
Word origin
From mono- (“one”) + -treme (“hole”).
Used in a sentence
“Nomotreme fern and moss spores are monotreme.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
No curated clues for monotreme yet.