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interdental

American  
[in-ter-den-tl] / ˌɪn tərˈdɛn tl /

adjective

  1. between teeth.

  2. Phonetics. articulated with the tip of the tongue between the upper and lower front teeth, as the fricatives (th̸) and (th) of thy and thigh.


interdental British  
/ ˌɪntəˈdɛntəl /

adjective

  1. situated between teeth

  2. phonetics (of a consonant) pronounced with the tip of the tongue lying between the upper and lower front teeth, as for the th sounds in English thin and then

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of interdental

First recorded in 1870–75; inter- + dental

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The toothbrush camera targets interdental cleaning, helping your teeth stay in pristine condition between dentist-office cleanings.

From Slate ● Sep. 14, 2026

Of course, no one likes flossing, but Dr Sharma says using interdental brushes, particularly rubber ones, can make it easier and less painful.

From BBC ● Nov. 2, 2025

If you really dislike flossing, try and interdental brush.

From Time ● Dec. 6, 2016

In addition to brushing for twice the recommended amount of time, I use an interdental brush twice a day and floss once a day.

From New York Times ● Aug. 29, 2016

The interior of the mouth is examined by holding the head up and inserting the fingers through the interdental space in such a way as to cause the mouth to open.

From Special Report on Diseases of the Horse by Charles B. Michener

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