1. Of or pertaining to the adenoids 
2. Sounding as if the nose were pinched
   - pinched, nasal

See also: adenoid, high, high-pitched

• genus Oxytropis
• genus Oxyura
• genus Oxyuranus
• genus Ozonium
• genus Ozothamnus
• genus Pachycephala
• genus Pachyrhizus
• genus Pachysandra
• genus Packera
• genus Padda
• genus Paeonia
• genus Pagellus
• genus Pagophila
• genus Pagophilus
• genus Pagrus
• genus Pagurus
• genus Palaemon
• genus Palaquium
• genus Paleacrita
• genus Palinurus
• genus Paliurus
• genus Palometa
• genus Pan
• genus Panax
• genus Pandanus