tertium quid /tûrˈsh(i-)əm kwid or terˈti-ŭm/)

1. A third unknown thing related to two specific known things
2. Something intermediate between opposites
3. The third person in the eternal triangle

• saggings
• saggy
• sagier
• sagiest
• saginate
• saginated
• saginates
• saginating
• sagination
• saginations
• sagitta
• sagittal
• sagittally
• sagittal suture
• sagittal sutures
• Sagittaria
• Sagittarian
• sagittaries
• Sagittarius
• Sagittariuses
• sagittary
• sagittas
• sagittate
• sagittiform
• sago