'Interdental' definitions:

Definition of 'Interdental'

From: GCIDE

Interdental \In`ter*den"tal\, a.
1. Situated between teeth; as, an interdental space, the space between two teeth in a gear wheel. [1913 Webster]
2. (Phon.) Formed between the upper and lower teeth; as, interdental consonants. [1913 Webster]