acetabulum /a-si-tabˈū-ləm or -sē-/ (zoology)

1. The hollow that receives the head of the thigh bone
2. One of the cotyledons of the placenta of ruminants
3. The cavity that receives a leg in the body of insects
4. (in various invertebrates) a sucker

acetabˈūlar adjective

• Plymouthite
• Plymouth Rock
• Plymouth Rocks
• plyometric
• plyometrics
• plywood
• plywoods
• Pléiade
• p.m.
• pm
• PM
• Pm
• PMBX
• PMDD
• PMG
• PMO
• PMQs
• Pmr
• PMRAFNS
• PMS
• PMT
• pn
• PNA
• PND
• PNdB