1. Formed between the upper and lower teeth
   "interdental consonants" 
2. Situated between teeth
   "an interdental space"

Encyclopedia: Interdental

• noninflammatory
• noninheritable
• noninstitutional
• noninstitutionalised
• noninstitutionalized
• nonintegrated
• nonintellectual
• noninterchangeable
• noninterference
• nonintersecting
• nonintervention
• noninvasive
• nonionic
• nonionised
• nonionized
• nonjudgmental
• nonkosher
• nonleaded
• nonlegal
• nonlethal
• nonlexical
• nonlexically
• nonlinear
• nonlinear correlation
• nonlinear distortion