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

• gastroparesis
• gastropod
• Gastropoda
• gastropodous
• gastropods
• gastropub
• gastropubs
• gastroscope
• gastroscopes
• gastrosoph
• gastrosopher
• gastrosophers
• gastrosophies
• gastrosophs
• gastrosophy
• gastrostomies
• gastrostomy
• gastrotomies
• gastrotomy
• gastrula
• gastrulae
• gastrulas
• gastrulation
• gastrulations
• gasts