1. Nearly annular; having nearly the form of a ring

Encyclopedia: Penannular

• oscillogram
• oscillograph
• oscilloscope
• oscine
• oscine bird
• Oscines
• oscitance
• oscitancy
• oscitant
• oscitation
• Osco-Umbrian
• oscular
• osculate
• osculating circle
• osculation
• osculator
• osculatory
• oscule
• osculum
• OSHA
• osier
• Osip Emilevich Mandelstam
• Osip Mandelstam
• Osiris
• Oslo