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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:

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 2015, Evidence-Based Dentistry summarized a Cochrane Review of seven randomized controlled trials looking at how interdental brushing in addition to tooth brushing compared with toothbrushing alone or toothbrushing with flossing.

From New York Times Aug. 29, 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

It is extensively used also in correcting irregular positions of the teeth, and for making interdental splints in the treatment of fractures of the jaws.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 "Demijohn" to "Destructor" by Various

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