Interdental

adj, noun

adj, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A speech sound pronounced with the tongue between the top and bottom teeth.
  2. 2
    A small toothbrush for cleaning in between adjacent teeth.

    "After he was struck by lightning, Melnyk suffered chronic problems with his teeth, despite brushing and flossing and using interdentals and even a Water Pic."

Adjective
  1. 1
    Pertaining to the space between the teeth.

    "It is recommended to use an interdental brush, or dental floss, to clean between the teeth."

  2. 2
    Pronounced with the tongue between the top and bottom teeth.

Synonyms

All synonyms
interproximalintertooth

Example

More examples

"Why should I use interdental brushes?"

Etymology

From inter- + dental.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.