Prototheria /prō-tə-thēˈri-ə/ (zoology)

The monotremes

protothēˈrian adjective

• ottavas
• ottavino
• ottavinos
• otter
• otter-board
• ottered
• otter hound
• otter hounds
• otter-hunting
• ottering
• otters
• otter shell
• otter shells
• otter shrew
• otter shrews
• otter-trawl
• otter-trawling
• otter-trawls
• otto
• Ottoman
• Ottomans
• Ottomite
• ottos
• ottrelite
• ottrelites