1. Used to refer to cited works
   - throughout

Encyclopedia: Passim

• obtruder
• obtrusion
• obtrusive
• obtrusively
• obtrusiveness
• obtund
• obturate
• obturation
• obturator
• obturator vein
• obtuse
• obtuse angle
• obtuse leaf
• obtuse triangle
• obtuse-angled triangle
• obtusely
• obtuseness
• obverse
• obvert
• obviate
• obviating
• obviation
• obvious
• obviously
• obviousness